Here’s my attempt to interpret the linked video through a CTC lens:
In the video, he uses the terms “economy picking”, “alternate picking”, and “directional picking”.
One TL;DR point: In the video, he says that the technique he refers to as “directional picking” was not invented by him, but he claims to have coined the term. The linked video doesn’t contain a demonstration of that technique (though apparently other videos on his channel do).
In the video, he broadly refers to “economy picking” and “directional picking” as (paraphrasing) “two different approaches to inside picking”.
General observation about his overall picking technique: when he plays at “fast” or “moderate” speeds he uses a wrist-oriented DSX approach, though for some licks he lets the pick stay trapped on both downstrokes and upstrokes.
“Economy picking”
TL;DR: He demonstrates a fully trapped version of “two-way sweeping”.
Says the economy picking approach requires planning number of notes per string in advance to eliminate hopping string changes;
Example lick is a loop of four notes descending: 2 notes on B string, 2 notes on G string, repeat. He starts with a downstroke on the B string.
He appears to have a DSX setup, but in the example, he does trapped strokes in both directions and the example lick gets “two-way swept” with no escape strokes, so maybe he means organizing licks so that no escapes are necessary; basically “two way sweeping” without the addition of escapes.
“Alternate picking”
TL;DR: He applies a DSX motion to the previous example, but appears not to realize that you can sometimes optimize a lick by starting with a DSX upstroke rather than of a DSX downstroke (or by using USX).
He discusses and demonstrates how what I’d call a “strict alternate” approach to this lick can be problematic (for him, DSX starting with a downstroke, with either stringhopping or a helper motion for intermittent upstroke escapes). He recognizes that “hoppy” motions are inefficent. Without discussing the concept of a “helper motion” explicitly, he observes that there are people who are able to make this version of “alternate picking” work, but argues (and I agree) that it takes a lot more effort to get good at that compared to the “economy” (i.e. “two way sweeping”) approach he discussed previously.
However, he either doesn’t recognize or doesn’t reveal that this lick can be played non-problematically with strict alternate picking (without hopping or a helper motion) if you use DSX starting with an upstroke, or USX starting with a downstroke. He only discusses what happens when he uses his fast picking motion (which happens to be either DSX or fully trapped) and starts on a downstroke.
Ironically, when he demonstrates this approach “slowly”, he ends the first four notes on an escaped upstroke (unlike when he plays fast), and from there still talks about having to “jump over” the string to get to the next stroke (that “jumping problem” is an accurate description of what would happen if you tried to play this with strict alternate picking with a DSX motion, starting on a downstroke; the first four notes descending would then end on a trapped upstroke; (Edit: for “strict alternate” you actually would have become “stuck” already after the second note of the phrase, unless you did something like a helper motion or a swipe to set up the third note).
He then spends roughly 10 minutes going through a series of examples that apply the “economy picking” mechanics from earlier to slightly different 4-note-descending 2-note-per-string phrases.
Example 2: one fretting difference, but same picking mechanics.
Example 3: more of the same picking mechanics.
Example 4 uses high E string and B string, but same overall picking mechanics as before.
Example 5 uses high E string and B string; same picking mechanics.
Example 6 uses high E string and B string; same picking mechanics.
Talks about mixing examples 5 and 6; same picking mechanics.
Example 7: uses B string and G string; same picking mechanics.
Discusses different fingerings for the fretting of example 7.
Example 8: uses B string and G string; same picking mechanics.
“Directional picking”:
Describes as another form of “inside picking”.
Claims to have coined the term in the early 1990s, though not to have invented the technique.
Says no “advance planning” of notes per string is required (in contrast to the approach he referred to earlier as “economy picking”).
This video contains no demonstration or explanation of how “directional picking” works.
From another video on his channel, it sounds like “directional picking” is the term he uses for single-escaped picking mixed with sweeping. It’s not immediately obvious to me whether he recognizes that DSX is just one way of doing single-escape picking (i.e., not clear whether he ever applies what we’d call USX). It’s also not clear to me whether what he calls “directional picking” also includes the strategic use of hammer-ons and pull-offs (which would bring it in line with what we understand as the DSX approach of players such as Vinnie Moore; or the USX approach of players such as Yngwie Malmsteen).