I installed Phosh on my ROG Ally with Arch. It’s surprisingly good for that purpose. Squeekboard is the best onscreen keyboard for Linux that I’ve used, at least when you add in custom configuration files. The only issue for this use case is that phoc doesn’t support variable refresh rate displays (to be fair, neither does GNOME’s mutter, but there’s a modified mutter-vrr package on AUR that does). If phoc supported VRR then it would be great for gaming handhelds. Squeekboard’s integration is much better than the Steam Deck keyboard on KDE.
Here’s what that looks like, in portrait mode it works like a tablet. Have to do screen rotation via the toggle in notification area or settings as gyro doesn’t work for rotation.
I never thought of installing a mobile linux distro on that; interesting choice.
Does it work for gaming/phone things?
Not as well as I would’ve liked, I ended up going back to Plasma on it. It works wonderfully for touchscreen computing, such as browsing and using desktop apps without a mouse and keyboard, but gaming doesn’t work well on it mainly due to the lack of VRR support on Phosh/Phoc.