I'm totally a Eb standard kinda guy. I don't think you necessarily need a change in string gauge to detune a half step. Might need a quarter turn of the truss rod after it settles, but maybe not even that. In particular, 10s in Eb is just rock and roll. Fluff might need a different gauge, though, since he uses Ernies. ;-)
Jimi and SRV were totally different animals with regard to string gauges, though both liked a heavier bass E string than the rest of their set. Jimi reportedly used banjo strings on his trebles because super light strings weren't invented yet, everything had a wound G back then. SRV used 13-60 "telephone wires"... I bet you could probably go win an archery competition with his old axes if they were left at tension all these years.