If you're still interested in bluetooth earpieces and the tab, yesterday I had time to test.
Motorola H700: no go. Connects but audio stops immediately.
Nokia HS26W: no go. Connects but no audio at all.
My wife's Philips+Swarosky crappo: works flawlessly
(it's *her* tablet, actually).

So the thing is picky at connecting with bt headsets.

If I have time I'll try some a2dp later.