Since IPSC only scores you against people who are shooting in the same Division, why not? I mainly shoot Production and Revolver (sometimes I'll try Standard with a Glock 22 just for the hell of it), and I have fun in all 3, but they're very different, almost to the point of being an entirely new sport. Since you don't have the ammo to throw away when you're shooting revolver that you might have when you're shooting a semi, accuracy gets to be more important, but speed is still the most important (though it's more evenly balanced between the D and the C than in the other Divisions, where you can basically say the fastest one through the stage is going to win it). As long as you're having fun, and there's enough of a group in your area to give you some competition, I'd say "Have fun!" (and practice those reloads).