Holy crap y'all, Quickemu is amazing! I got Windows 10, (English United States cause English International only allowed me to choose English UK for some reason), installed it with Narrator, downloaded and installed NVDA, and it barely feels like I'm running a VM at all. I kinda wonder if it'd work well at all on the BTSpeak. I could imagine it passing through Braille access on a future BTBraille.
Anyway, two commands I've figured out so far, Control + Alt + G gives control back to Linux, and Control + Alt + F puts the VM in fullscreen.