It’s something I’ve developed since I first discovered cracking the code, I realised that for whatever reason it was, I naturally found it easier to change strings after a downstroke.
I got into Eric Gales, he has an Eric Johnson ish style with the cascading type licks so I decided to try it out, and just built a vocabulary around mixing patterns of 3,4,5 & 6 together.
If you are trying to go for a note for note approach some things will translate quite easily, whereas others maybe more difficult especially if you wanted to pick every note, I find if I do this it can create really tricky left hand fingerings, but on the plus side you do come up with new ideas which are fresh and maybe not to common/used!