Yesterday I bought a MDW-150 Exclusive Edition from Amazon.co.uk Thanks to moneytoo for this great app, and quingu for asking a question and bumping the thread (I didn't know anything about openwatch before)

Mine didn't shipped yet but I'll try to answer your questions based on other users' experiences:

First of all, DO NOT BUY it from MobileCityOnline (Amazon.com) there's lots of reports about this seller and they got a batch of defective watches. You can buy it from Amazon.co.uk instead.

AFAIK, OpenWatch is now fully supported on PR1.2 and all features working well enough for everday use. And there's some ppl out there on openwatch forums using openwatch with their maemo devices.

Anyway It would be great if someone posted a video review about his OpenWatch experience, so we would know how it looks like and how useful it is Or I can do that too but I'm not gonna get my watch soon (ETA: 10 - 16 September)