As long as both brands are on your motherboard’s Qualified Vendor List (QVL), then you should be good in terms of compatibility.
Do be aware, however, that using all four memory slots can result in your RAM running at a slower-than-nominal speed, as the memory controller has a more difficult time handling four sticks than two. This isn’t automatically awful - I’m also writing this on a machine running 2x8+2x16 - but you might want to examine if you would be okay with 2x16 alone.
For that matter, if you poke around in some games’ files, you can find the actual game.exe and launch it directly from there, bypassing the launcher. You just bypass the authentication and compatibility checking as well.