Can PM Braille Display Be Used With Off-the-Shelf PDA?

[Kane Brolin]

Hello.  This is my first official inquiry into anything PAC Mate related.

I'm just about to upgrade from a Braille 'n Speak 2000 to a truly
21st-century PDA that actually has wireless connectivity built in.
The trouble is, I don't know exactly what I want, being torn between
the PAC Mate and an alternative option that would incorporate an
off-the-shelf PDA (such as Treo or VX6800) with MobileSpeak and phone
capability.  Eventually, I might choose to own both options for a time
so I can find out first-hand which I like best.

The PAC Mate, obviously, is more of a known factor, and I like the
fact that the Omni apparently comes with a detachable 40-cell Braille
display that may be used with a PC as well.

In case I choose to buy a PAC Mate now and then to experiment with an
off-the-shelf smartphone or PDA later on: Can I detach the PAC Mate's
Braille display and connect this to a Treo, Motorola Q, iPaq, etc.,
via some kind of Blue Tooth or USB connection when I feel like it?  Or
am I better off choosing something that is solely a Braille display
(such as BrailleConnect or  BrailleStar) for integrating with an
off-the-shelf device later on?

Just trying to get some opinions and to make a choice that leaves me
as much future flexibility as possible.  Thanks!

-Kane