Not that I've heard of.
I've always been jealous of the US for having the same 3.0 supercharged V6 that's in my S5, as I like the SQ5, but not a diesel fan.
Guess you can't please all the people all of the time...! Is bizarre how they don't offer the 3.0TDI for the standard Q5 though...? Surely that would of been a good alternative for yourself?
As you say, is also a shame it's slower. Guess this is where the massive torque from a diesel really excels for big heavy SUVs...would be interested to see figures beyond the 0-60 ones though.