Zombie thread from 2008 resurrected.
I couldn't take the time to read 10 pages of replies so this may have been posted already.
The main reason that I heard in support of a revolver over a semi auto was the ability to reload and fire with one hand. A semi auto takes two hands to rack the slide and if you have been hit and one arm is not usable then you can still work a revolver with one hand.
Obviously there is also the issue of jamming with a semi that doesn't usually happen with a revolver.
Personally however, I carry a shoulder holstered S&W model 59 with 15 rounds of JHP's. I will take my chances on a stovepipe or FTF and just like the idea of having 15 rounds compared to 5 or 6. I also carry a 9mm shield back up gun in my waistband with 8 more. If both of those can't protect me then the big guy upstairs really must want me to come home.