GOG Galaxy or Standalone?

Hello, i wonder which option is best for Witcher 3 / Other GOG Games.

Like how do i install DLCs or patches in the standalone (installed directly from lutris.net) version?

I installed Witcher 3 downloaded from gog during Lutris install, And it runs perfect. And it auto installed all my DLC from gog as well. So i guess, If you own it, You will just get it.