All of the formatting features work without problem.
Right now, the issue I'm having is with reading and opeing RTF and DOC files. I thought this was a font issue, but if I save it in AbiWord's native format, it works fine.
Edit: I just tested it with Hudson's USB Keyboard module:
https://www.mobileread.com/forums/showthread.php?t=10214 and it works great!