I have one, it works fine with bluetooth in an e70 and a jawbone.
Check out
www.blackberryforums.com and
www.crackberry.com for specifics on how it works,but I like it, it just took a few days to get used to it.
It should come with .75 firmware, if not, upgrade it immediately. There are leaked beta firmwares out there, I recommend that you don't upgrade to those until they're official, there are varying ideas on whether loading a beta/leaked fw will void your warranty, so don't risk it.
Those 2 sites have suggestions for the settings for typing, as well as hints/tricks/tips on how to use it best.
I will say that if you type on a bberry a lot, an 8830 might be better for you, if you're not a heavy user (with typing) than it will be fine. I don't have a problem with it now, but the first couple of days were tough to get used to it.
Also, you'll need to buy a new car charger, it uses micro-usb not mini-usb so your old charger won't work.
Let me know if you have any questions.
Gresch the "so-called IT expert"