Would a tablet (Cintiq Companion 2) count as a device in my plan?

Hi!

Sorry if this is not the right place to ask this. I am hoping to get a Wacom Cintiq Companion 2 tablet in the near future, and I was thinking about getting it set up. I already have Photoshop installed on a PC and a Macbook Air. I was wondering if I would be able to install Photoshop on the Cintiq Companion 2 or not, since I already have two devices activated in my Creative Cloud plan. It's kind of in a grey area between mobile devices and computers, so I just wanted to ask to make sure.

In addition, if I do have to sign out of another one of my devices, how easy is it to sign back in? I might just deactivate my laptop and sign into it if I need it.

Thanks in advance!