duty gun
I walked beside an issued, stamped slide P220/.45acp for about 20 yrs, and was responsible for several more in my district as a SIG armorer. I also purchased one, and had it approved for duty carry, and did so on occassion. Still have my private purchase SIG P220.
I found my guns, and those others, to be reliable and accurate....I'd go so far as to say extremely accurate. I had some issues with magazines going south over the course of years, but once the culprits were identified and replaced, new mags ran fine. I even shot my P220 in local IDPA matches with my duty rig.
The SIG people described the P series guns as "wet" pistols, meaning keep them lubed (and clean of course). Normal clean and lube practices kept mine running fine. The P220 is a big handgun, which may or may not conceal easily depending on physique and garments. I started my carreer with a 6 shot revolver, .38 and later .357. My duty load with the revolver was 18 rds on my belt (two speed loaders and a 2x2 pouch) and 6 in the gun for 24 total.
When the P220 /.45 were issued, the 8 rd mags were not on the market. The initial load out was 7+1 in the gun, and two 7 rd mags in pouches on the duty belt for a total of 22 rds. That seemed a step backwards from 24 revolver rounds, and quad pouches for the auto pistol soon appeared that carried 4 mags. Shortly thereafter, the 8 rd mag appeared. I took to carrying 4 magazines in quad pouch for patrol. That brought the belt loadout to 9 rds in the autopistol and 32 rds on the belt for a total of 41. That load was heavy with all the other LE gear we carried, but comforting. The P220 was lighter than the old L-frame M686 revolvers, but with the 4 mag ammo load, the belt rig was heavier than the revolver days. I had a "dress" duty belt for court and other show appearances that stayed high polish, carried only two mags, no radio and only one set of 'cuffs, that was much more wearable, but not practical for patrol.
SIGS doublestack .45, the P227 hit the market just before I aged out. It was approved for patrol use, but not issue. Had I remained, I likely would have gotten one on private purchase. Not sure what issues that would have raised with holsters and pouches, the agency was fussy about such things.
Not sure what some of shis has to do with the OP, thanks for being patient as I remembered.