But see my OP.
I appreciate everyone's comments (and look forward to trying out your patch, Stringtheorist). Here's a few comments of my own:
1. I grow weary of advice that "you can't sound like [fill in artist name] unless you have his [hands; guitar; rig; whatever]". While undeniably true, such tonal nihilism is also undeniably unhelpful. Yes, I know I'll never play or sound like SRV (or any of my other favorite players: Page, Lifeson, Van Halen, Edge, etc.). So I shouldn't even bother to try? There are some stock presets in my Ultra that come remarkably close to particular song/artist tones,
even when I play them (and I
suck). Same goes for some presets I have created myself. I made this one "from scratch":
YouTube - The Spirit of Radio‏
and I think it sounds pretty close, even though I couldn't get Alex himself to play it for me. So, as a general statement, I think trying to achieve artist tone--even without artist hands--is a worthwhile endeavor (and, evidently, so did the creator of "Stevie's Rotary", "Brown Sound", etc.).
2. More specifically, with regard to SRV, while there's no disputing his unique talents, I have certainly heard musicians come close to his tone without the actual use of his hands (which, he being deceased, would be illegal in most states, even here in Michigan). How? Well, first, yes, talent. But also using the right gear. When I use to play "Tightrope" (badly) through my Line 6 Guitarport, the tone was a reasonable approximation of the real thing. I have no doubt that any Axe-Fx could do better, but I haven't been able to dial it in--my bad. Since the entire purpose of the Axe is to approximate as nearly as possible multiple amps and effects, I find the suggestion to obtain a Super Reverb, a Fuzz Face, etc. to sound like SRV,
particularly in the setting of this forum, rather pointless (it would be different, I suppose, had I posed the question on, say, TGP).
3. I'll take my ritual forum beating now. (I see what Scott's had to put up with, and he's respectable!)