I tried this last time at the range. .45 XD in right hand G19 in left. Very difficult for me to coordinate aiming and getting back on target with the different recoils. It was hella fun though.....
done it with 2 1911's didn't work to well I however tried to shoot at the same time not trying to shoot alternatley, it was an exercise in futility, lots of spent .45 few holes in paper.
Guilty. Me and my buddy have done it using our Glock 21's. It's a lot of fun. We don't really concern ourselves with accuracy. Usually it's just to see who can empty both pistols the fastest.