Wanted to play GW2 on my Linux Laptop (Steam Proton is easier than setting up the original Launcher), also thought about buying a Steamdeck in the future. No, you cant lauch the 2 different Versions at the same time and based on a quick Google Search, most Multilaunch Tools (GW2Buddy, GW Multi-Launch, GW Launcher) dont seem to support Steam Login.
Wanted to play GW2 on my Linux Laptop (Steam Proton is easier than setting up the original Launcher), also thought about buying a Steamdeck in the future. No, you cant lauch the 2 different Versions at the same time and based on a quick Google Search, most Multilaunch Tools (GW2Buddy, GW Multi-Launch, GW Launcher) dont seem to support Steam Login.