By the way, I discovered that I do still have a later stylus pick kit - with a CD and 3 picks - that I now remember ordering when I lost or couldnât find the original booklet with a single pick. (That may actually still be around somewhere - the problem it is a tiny non-standard format of book and without a readable spine that disappears on a bookshelf).
It doesnât feel like it would work with the paradigm of identifying an efficient motion by trying stuff out at speed initially; so that is another thing against it. In my initial look at it recently, I found that I could use it when tracking/ moving from low strings to high strings; but it would catch a lot in the reverse direction.
Also, the stylus pick website is a bit odd in that it has a number of books by the jazz guitarist Jack Grassell with titles that may implying building up speed; but they are really aimed at jazz guitarists building up improvisation or comping chops (and in standard notation without any tab which may not appeal to would be shredders). Of course, there is some overlap in those. The stylus pick book appears to be by somebody called Rich Acocella, based on a copyright notice in my electronic copy, although it doesnât appear on the cover. I donât think itâs a pseudonym for the other guy based on this video (supposedly featuring a stylus pick, by the way) or other videos posted on the account although I could be wrong (since his appearance may have changed with age or he may not be in this particular video): https://www.youtube.com/watch?v=MV8PcROWToo
William