I would prefer the hypervisor. It’s cleaner to separate things that weren’t meant to mix in the first place.
Make sure that your gaming VM uses a real harddrive/SSD instead of virtual disk to prevent sluggish I/O.

Honestly, idk. Anysoft Keyboard and Firefox integrated seamlessly, so I never really checked on system level.
Settings says there is no app set up, but if I tap it, it is listed as the only choice?

I (rather seldom) use FUTO Voice for STT and SherpaTSS for TSS.

Itinerary is a terrible name for a terrific app that made traveling way less stressful for me.