I've only had success when working with Krylon products... however the mysterious Krylon Matte Varnish always seems to elude me (ie every store I go to never seems to have it in their inventory list!).
I would try a test model so you can see for yourself exactly how it reacts to it. I'm not doubting anyones experience here, I'm just saying that it's better to have something in person when it comes to these sort of things