> Why is it that the IIfx is not on the "working models" list?

Because it doesn't :-(

> What makes it so different from the IIcx or IIvx, or has just no one gotten
> their hands on an fx to try it out?

The IIfx is filled with little custom chips which Apple doesn't seem to 
want to tell anyone how to program.  It is basically just too different 
from the rest of the II line (or any other Mac for that matter) to work 
with NetBSD until someone takes the time to make it work.

Later.

-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX