I picked up mine from Bass People yesterday. Haven't stopped playing with it yet, with the exception mentioned below.
It's strong and sturdy, but seems to be a real battery hog... took it out to a jam last night after testing it out with a supposedly new battery for only an hour or so, and it died after about 30 mins. I wasn't sure what was wrong with it as it gave a confusing "reading card..." message which made me think it wasn't working. Got home, connected it to an external power source and all back to normal. The quick start guide recommends changing settings to extend battery life at the expense of sound quality but I hadn't done that at that stage.
Sounded awesome up to that point and I haven't even got started on the custom settings yet... having way too much fun with "Who's Your Daddy?"!