Regarding the directional picking question, I just stumbled upon Steve Vai's 30 hr workout, in which again he speaks of directional picking when changing the strings - alternative picking on one string and if switching to upper string playing upstroke, and if to lower - down pick. He does not mention how to implement it with scales - only with angular exercises.
More over I found a couple of opinions on the web, that alternative and directional picking shouldn't be practiced separately, since they are the same thing, only directional picking is upgraded alternative.
Now since Justin's site and forum have always been a starting point for me and I have implemented exercises like the spider and scale picking in my daily routine, my question is how could I add directional picking and does this makes the spider pointless?
It seems to me that this could boost my skills, since I reached 120BPM at 16th notes (even though not very consistently), but I am afraid that if I don't understand this concept correctly (and since I am missing official confirmation from Justin if the technique is okay
) I could make a mistake and then have to invest more time to clear it up
Please give me some guide again! Thanks a lot!