I just recently got back into gun ownership, and haven't yet carried a concealed handgun because I only just applied for my permit. It should arrive soon, though. (Assuming I haven't done something while sleepwalking that I don't recall.) For my first gun, with lots of input from members of this forum, I bought a CZ 75B, and a Kadet Kit so that I could practice marksmanship without running up my ammo bill too much. I'd be more than happy to carry the CZ concealed, even though it's kind of a big gun. I've been debating which manual of arms to use, and one of the reasons I got the CZ is that it left me with a choice. I decided to carry it hammer down (the safety won't engage in that configuration) mostly for reasons that Jody has already touched upon, but also because I contemplated purchasing a striker-fired weapon someday, and I didn't want to program myself to use two manuals of arms. (I say hammer-down, but actually I carry it at half-cock, because a nerve problem in my right hand means that the DA pull, with such a large grip, is a little difficult. I've ordered a narrower set of grips for the CZ.)
But I also do a lot of cycling, and decided that the CZ is just a little heavy to allow me to carry it on the bike on long solo "century" rides. I needed a smaller, lighter, gun and carry system. So I checked around, considered the S&W Airweights, and eventually bought a lightly used recently manufactured Kahr P9. It's not quite as small as the PM9, but I like the full-sized grip as opposed to the shortened version, and it has a little better aiming radius. It just felt a little better than the PM, and the weight penalty is only an ounce. I also shopped around for a good holster, and considered the C.T.A.C. and a number of leather holsters. One reason I went with the Kahr is that I sweat A LOT on the bike, in hot weather, and the polymer/stainless construction of the Kahr makes it ideal. For similar reasons I decided a Kydex holster would probably be better than leather. Eventually I decided to get a FIST K#1, because it can be reconfigured for a number of different carry circumstances, including the extreme cant that I will probably need to carry on my (recumbent) bike. But I plan to carry the P9 in other situations as well, just because I have it and it's a little easier to conceal than that big ol' loverly 75B.
I'm not sure I understand all the concern about having a safety. I don't consider carrying a striker-fired weapon to be any more dangerous than carrying any weapon in hammer-down DA mode. Even on a bike, during a fall for instance, I simply can't imagine a situation where the Kahr is likely to fire without a deliberate yank on that 7 lb. trigger. It certainly isn't any more likely to fire just whacking on the pavement, than it would were a safety on. And if I were in a situation where I'd need to use it while still on the bike, about the last thing I want to do is fiddle with a safety while steering and balancing with one, or no hands.
I'm watching this thread with interest.