Bought a used SP2022 40. Wanted it because it had night sights and waS DA/SA. Hadn't owned either before.
On night sights, found out they only work when I have my glasses on. Otherwise totally useless. Also, it's cool they're always on, unless you want to be stealthy. Overall, I like them, but they are not a "have to have" item. Glad I tried them.
On DA/SA, great idea. Love it for a nightstand gun or carry weapon. It's a point and pull system like a striker-fired. Don't have to find a safety in the excitement of an encounter. After the action is over, then you can use the decocker tab. That's a better manual of arms. In DA, rebounding hammer down, its a long safe trigger pull to shoot it. Safe as a DA revolver. The SA is not as crisp as SA on a K-Frame, but is much like a striker-fired. The transition is not a problem at all but very natural after about a box down range.
Glad I bought the Sour Sig to discover the above. However, the SP2022 would not feed lead boolits. Tried all COLs, charges etc... and they would jam on the feed ramp. A little daub of grease on the ramp and it was good for a mag or two. Bummer.
Then it started shaking off its trigger pivot retainer. It's an out board snapper sleeve that looks like a fancy O ring. When it would bail off during firing, the trigger would move to where it wouldn't work. Not good.
Took it to the LGS and after discussions and a little cash outlay, left with a new PEACH. A new Sig P229 in 40. Same sights, better feeling DA/SA trigger, better design w/o the snapper sleeve, aluminum frame, better feel in my hand, great throat, shoots cast beautifully! Love it.