Yup, you’ll be fine. If a game has a Linux version though, you’ll still need to download some portion of it. By the way, just don’t use NTFS to play on Linux.
In my experience it works perfectly fine as long as you perform the steps outlined here, as per Valve’s official recommendation. The section about preventing read errors is particularly important, but the whole thing is worth a read.
Using a NTFS disk with Linux and Windows
Compatibility tool for Steam Play based on Wine and additional components - ValveSoftware/Proton
Might be useful for dual-boot users or the people in transition, but doesn’t worth the hassle for exclusive users. However it will still cause some problems one way or another because it’s just a workaround.
THANK YOU for this!! I fought with ntfs in a new manjaro install last weekend and just could not friggin figure it out! So excited to see a valve better fix!