Yeah I use them all occasionally. I'm still experimenting with revolver and ambassador to see which one I prefer, so far I think the revolver is still much better in close/mid range pistol fights, especially against someone who knows how to dodge. Whereas the Ambassador is much better in some specific situations, the revolver seems to be more all around.

I basically only use cloak and dagger for when I need to plan my attacks better, like if I'm playing blu on badwater and we're at the final point and when I'm playing pugs/scrim. I love the dead ringer but if I want to be as efficient as I can I'll just go with the original cloak since it's the most versatile.