Hi,
First post - hope I'm not violating any introduction rules, but I wanted to share my experience with this.
I have a 10.3" barrel to which I fit a low profile Adams Arms Piston kit. It was originally a DI gun. The first thing I noticed was a significant weight increase, as with any piston gun. I later picked up a suppressor. My experience in shooting it suppressed is that it has run 100%, and I can turn the gas down to a minimal level and decrease the recoil. Whether by weight of the kit, weight of the suppressor, turning down the gas - I have almost zero shift due to recoil. The impulse is slightly delayed compared to DI, and the gas is not much of an issue. The Adams Arms kit has a coating on it that wipes clean super easy.
I, more recently, have put together a 11.5" DI gun to shoot suppressed as well. It had a smaller gas port hole compared to some others (can't remember the exact measurement). It was definitely lighter overall. When shooting it, I definitely noticed a more direct shove to stock and gas. In using a normal BCG, a few shots indoors definitely kicked up more gas to the face than I was used to. This was after using the silicone gasket seal to the charging handle and shooting indoors. I have since, picked up a Bootleg adjustable carrier. The Bootleg didn't reduce the gas, per se, but vented more of it off of the carrier.
So... for a range gun that I want to shoot a lot suppressed and blast away, I will reach for my piston gun. For something I am going to haul around and where fatigue is a factor, I am reaching for my DI gun. Hope that helps.