This is the beauty of the techniques. Some are natural for others while for some it’s really a challenge and quite a thinking game.
The challenge I have for economy picking is phrasing of uneven number of notes per string. For example, I have a phrase of 3 notes on A string then I went to 2 notes on D string then I went to 3 notes again on G string. From my perspective, on the A string, if I start on downstroke I’ll also end up in downstroke which is economic going down to D string. But here comes the problem, on D string we have 2 notes which I’ll end up with in an upstroke thereby stopping the economic motion going to the G string because it’s in opposite direction of the phrase. Like what I’ve said on the previous post, in economy picking odd number of notes per string equates to same direction of economy picking while even number of notes per string opposes the direction of the economy picking. This is the reason why it’s hard for my brain. Haha! That’s why I admire people like you who’s economy picking is more natural.
I believed Frank Gambale, which is the master of this technique, reconfigures the phrases or shapes to fit the technique. I also like Alex Hutchings, very great, melodic and soulful player, and he’s a master of economy picking too.
I remember Tom Quayle tried alternate picking too but for him, he said that legato is more natural for him. Steve Vai, I believed, is a proponent of cultivating the techniques that’s natural for us because he believes that in our strengths there’s also tiny or miniscule weaknesses on it which can be polish.