Topic: Question regarding gamesharing

So i am gamesharing with a good buddy of mine. My question is this: I already have the game downloaded digitally and so do they. My question is could i buy the disc copy and would they(my gamesharing buddy) still be able to play it seen as how its on his console? I just want to get more games on disc

You'll still own a game you bought digitally so I don't see why not