I carry a wheelgun, an SP101 .357. I used to carry semi autos but I prefer the power and reliability of a revolver. I understand that revolvers are subject to the same catastrophic failure that a semi automatic is but I will never have the noncatastrophic failure of a failure to feed or failure to eject that every semi auto I've owned has had at some point, at least once. If I have a failure to fire, I don't need the other hand to clear it. It's a matter of pulling the trigger again for the next round. Also this particular revolver is very easy for me to carry, conceal and rapidly bring into play.
I understand semi autos have a lot of advantages but I went with the revolver for a carry piece because I decided I'm not kicking down doors for a living and in the end what I really need for a self defense situation is pull/point/shoot in what will probably be 7 yards or less.
Semi-auto. I know that wheel guns can be arguably more reliable. However, I make sure to test my semi-auto with several different types of ammo and will not carry it until it proves itself to meet my standards.
True and I think anyone serious about carrying a semi should do the same. Revolvers are less likely to malfunction, and I carry them exclusively, BUT if there is a problem with a semi it can usually be solved by racking the slide. If there is a problem with a revolver, it's a "go to kitchen table and get the screwdrivers out and/or call gunsmith" event.