I just tested it with a couple rtf files that I had loaded.
They look fine. The only weird thing I noticed was that the page count was inconsistent. When I first opened one of the files up it said I was on page 1 of 4. I advanced the the next page and it said I was on page 2 of 78, then 3 of 100 something, and so on.
After a half dozen page turns it seemed to figure out what the correct page count was and stopped changing.
I've also noticed that a couple
odt files I moved over show up in the Pocket Pro as rtf.