Yeah, those alloy framed Beretta 92's can last forever. Saw a post from a competitive shooter on the Beretta forum that has over 100,000 rounds through one of his competition guns. It's pretty much stock except for a lighter mainspring and different sights. So a good alloy frame can definitely hold up.
My point is that I wish CZ would offer some alloy versions of their long barreled guns. Right now, the alloy frame is only available in the compact frame such as the PCR, P-01 and P-06. I think the standard SP-01 weighs in at 2.6 lbs, which is 41.6 ounces. With 19+1 rounds of 9mm loaded at approx. 1/2 ounce per round, you're up to almost 52 ounces fully loaded, which is 3 lbs. 4 ounces. That's starting to get in to dumbell range. Granted, the weight helps tame recoil. But most other guns that size are going to come in almost a pound lighter. At the moment, for me, the weight is a deal killer. However, if CZ puts out an alloy framed SP-01, I'll probably be first in line.
Robert