Device Mode Stable?

I have a couple of X50s that that I am considering deploying strictly in device mode to facilitate a request to be able to use them for something other than Zoom (Teams/WebEx, etc), typically they are set up as Zoom Rooms. They have 3.5.0 installed and seem to be stable in this configuration, I was just wondering if anyone has had issues using them in a similar fashion? 

Also I'm unable to find it anywhere but is it possible to change the background and logo while in device mode? I'd like to use our in-house branding. 

Thanks