six said:
by the way: I've become some kind of a "natural econo-picker"

, which actually slows me down sometimes. had to "upload" strict alternate picking again.
Economy picking should be a way around the confines of strict alternate picking. If it slows you down versus your alternate picking, it's not economy picking you're doing...it's the opposite
Once economy picking becomes second nature, you are opening the door to doing sweep picked licks all the time. Whether or not this all applies to you I don't know, but I figure it's worth breaking down economy picking.
Work on this exercise:
-----------------------------
-----------------------------
--------------------7-9-11---
-----------7-9-10-----------
---7-9-10-------------------
----------------------------
Pick the first 3 notes down, up, down, and as you go to the 4th note on the next string continue your downstroke from the string above and hit the fourth note with one continuous downward motion. Use the same principle across several strings. That is economy picking in it's most simplistic form.
When you are used to that, try to throw this in the mix:
--------------7-8-10--
-----------8-----------
---7-9-10-------------
----------------------
----------------------
----------------------
When you play the downstroke from the 3rd note, continue it on across the next string for the 4th note - but also continue it on one string further and hit the 5th note with the same stroke, then proceed with an upstroke and a downstroke to finish the phrase.
I've taught several people economy picking by getting them to concentrate on this basic approach. Before too long they are turning 3 string economy picked lines into one note per string arpeggios and the rest is history.