I was wondering if I purchase a stadia version and link it to my existing ESO account, do I have access to the same characters (are both considered PC? version)?
As mentioned here, with Stadia’s PC crossplay and cross-progression support, you can pick up and continue your adventures if you previously played ESO on PC/Mac or Steam, meaning you won’t lose any progression and be able to access all your characters and continue playing with your friends and guildmates as normal on the PC NA or EU megaservers.
Nice thanks, just what I was hoping! I play ESO at home, but on the road, I'll still be able to continue with Stadia without having to take along my gaming notebook!