Hiya Tomtex, and thanks for starting the thread. Have you started shooting or have a IDPA in your neighborhood? My range has IDPA every monday night, open to novice on up. Suggest checkin em out, the folks are quite open about sharing their wealth of knowledge and even trying out the different platforms. The mix of ex-military, LE, and competition shooters is a resource available for the asking.
I think you'll have to experience the feel of the weight in steel, alloy, polymer, and the various combinations for yourself, and decide the best compromise in shootablity verses comfort and concealability. For my personal experience, greater the weight the more shootable it is to me, from a comfort and accuracy standpoint. Plus one on JonNC suggesting you look at the PCR and po-1, if you can find them, they are worth the wait. Roam the czcustom website and read about the pro-tek line of guns they make, sounds like they have tried to improve the po-1 platform towards your CCW use. The IDPA I've seen, in my limited exposure, is 15 yards or less, on our 25yd indoor range. At 15yds, its very difficult for me to hit a 3inch target, with my po-2, at 7 yards its difficult to miss it. Part of the fun/frustration is searching and finding the right guns for your needs. Meaning that your CCW weapon could but dosent have to be your IPDA weapon,especially if ya like hitting all A's at 45feet, while moving left , right, and backwards.
Dennis, as always, had great food for thought and the equipment ta back it up. I totally wish the engineers at CZ were on the same wavelengh as Tanfoglio, as far as letting us convert a 9mm from compact to competition pistol by exchanging slides etc. I believe many of there guns you can kit for a different caliber as well, without buying a whole new gun. And EAA is the importer of these great guns, I own a witness P series and its everybit as accurate as the 75 its a clone of, lighter because of its polymer frame (easier to clean), standard rear adj sight (option on 75's), SS guide rod, (option on 75's), I even like their added safety feature of being able to engage the manual safety when the hammer is on the pin.
Good luck on your search and we look forward to hearing how its going...be well