Installing WoW in Steam using proton

As the topic says: is it possible to to install and play World of Warcraft in Steam using proton?
Basicly I want to make use of there original Steam Controller drivers (instead of SC Controller). Thats because I have some trouble using ConsolePort with my Controller in Linux. I additionally made a small video to shocase this:

I tried to add it to steam. But steam doesnt start it. Im not sure if this Add will be enough or if it does need a whole own prefix to run it.

Thanks in advance