Hi,
Seen that this afternoon while looking for a magazine in a book shop. The X2 makes the front cover of this month Total Mobile magazine: "The best music mobile ever. Sensational sound from Sendo. Exclusive first review" http://www.totalmobilemag.com/
I've had a quick look at the review and it seems that they loved it (although i have to say that this kind of magazine usually seem to love every device that are reviewing).
If only Sendo could have made it a few months longer, the X2 could well have been the beginning of something big...