Avowed CZ Cultist and unashamed CZ Bigot reporting for duty!
The P01 is the gun that turned me on to CZs in the first place. It really is a top-notch piece.
It carries IWB very well, with the thin profile due to the slide riding on the inside of the rails. I also have the thin aluminum grips from CZ-Custom installed. I have a Kahr PM9 that I used to use for concealed carry (also a great gun!), but once I got the Galco holster for my CZ, it really nuzzled in the waist very well, and my Kahr eventually got relegated to the back shelf for daily carry. Yeah, they're completely different classes of weapons, but the CZ carries very small for its class.
I agree that there's nothing wrong with full-steel frames, but the lightweight aluminum frame does remove the need for a special extra-stiff carry-belt. I simply used my everyday belt opened one more notch with the CZ.
One of the reasons I even looked at the CZ was because of the decocker. My personal opinion is that a defense gun is no place for a manual safety, because when you really need it, the last thing you want to be doing is f-in with a safety. (I've also carried a 1911 for a daily piece, and the ergos for that really don't hinder the handling of a manual safety, for me anyways...your thumb just naturally goes to the safety when you grip it, so for comparison between these two guns you have in mind, this may not be a factor).
Another thing was shown to me when we had "free play time" after a gunfighter league, one of the guys I hang with (a Glock guy) was dying to shoot my P01, so of course I let him. He showed me, side-by-side, when limp-wristed, his G19 would FTE properly, right on cue after only a couple rounds (he held it 90-degrees in his hand, light-fingered and fired into the berm, to simulate the limp-wrist). He did the same thing with my P01, and the whole mag emptied, no FTFs, no FTEs. I've never been a Glock guy, simply because of the ergos, but I always held them in high regard. Just something to think about when considering a defensive pistol...stressed, injured, or awkward angle in that critical time of need.
The stock trigger is thin and curved, I've replaced it with the (I think) CZ-85 combat trigger, which is thicker and a more shallow curve. That's an upgrade I recommend, personally. I also recommend a very large Swear Jar if you try to do it yourself. =) You almost need three hands to get that job done, lol.
So there you go. I'm pretty much a Certified Dumb Ass, a CZ Bigot, who can't hit the broad side of a barn even if I was standing inside said barn, but my .02, for what it's worth. =)
Good luck in your choice!
(Oh, and go CZ!)