Resurrecting this thread as there are a few reviews out now.
MTBR really liked it and the only downside they saw was the price along with proprietary bottles.
A womens biking blog Liked the bottle and design but after knocking it out with her knee she no longer considered them useful.

I have some money sitting in my paypal account and prices are as low as $36 at treefort plus shipping.
If I get three posts that want me to buy I will so an unofficial indepth BF review.