This is something that's just occurred to me recently...
For all Yngwie and Frank Gambale are held up as the masters of sweeping by most rock and metal players, not many of them actually use similar fingering approaches to them. Gamable and Malmsteen both have some pretty idiosyncratic ways of fingering arps, Gambale with a lot of 213s or similar fingerings (have a look in his 'Speed Picking' book and you'll see what I mean), and Malmsteen with his wierd 'sweep to ascend, hammer-on to descend' approach (look at Troy Grady's site for an explanation of this). Most rock guys seem to neglect these approaches though, and stick to the Jason Becker approach of basing all their sweeping on 3 and 5 string CAGED position shapes. Don't get me wrong, this is an awesome, versatile approach, I just think it's odd that so many people rate the other two players so highly, and yet don't seem to have examined their technique in that much detail.
Sorry if this comes across as overly pedantic, but I've been experimenting a lot with the Gambale approach recently and am having a lot of fun with it!
I promise I won't call you pedantic if you post up a few tab examples so I can sww WTF you're talking about, lol.