I have this mounted on a Savage 110BA in front of a NightForce 56mm scope for hog hunting. It works as advertised. It is essential to get the right raised rings to match the scope's optical path. With the 110BA these were medium height rings). Easy on and off the 1913 rail in front of the scope. Anything higher than 6 magnification is unusable. A case would be nice but a small camera bag works too. The IR illuminator is so-so, could be better but not unusable. Works about what you would expect with gen2+. I use a FLIR to spot heat sigs then switch to the rifle. I have a Pulsar 550 but in cold weather the reticle begins to scroll. There is also the issue of zero switching scopes and the difficulty of doing it at dusk. The PS-22 eliminates these issues. I wish I could have gone for a gen 3 but just couldn't see dropping another grand. Given the range of night shooting (a couple hundred yards anyway because of the low magnification) the gen 2+ is fine.
Pros: rugged, built well
Cons: Price
This review was written in the old system and had content requirements that are different than reviews written today.