I hope to get one soon (which I won!) with their new carbon fiber poles and a stove jack.
I plan on using it a lot. When I do I will post pics.
The specs on it look awesome: only 22oz (1.375 lbs), 9' diameter and a little over 5' high. My seated height (indian sitting on the ground) is only a touch over 3'.
I have a 10'x10' SilNylon tarp which weighs an even 1.5 lbs with 8 Ti stakes and guy-out lines. In comparison , I estimate that this thing will weigh right at about 2 lbs with their carbon fiber pole and Ti stakes. I think it is an awesome, totally snot proof setup.
In looking at the GoLite SL3, their specs say that it is about 4.5 lbs (because of the nest it comes with) and about the same square-footage (59.2 sq-ft vs 56 sq-ft for the BT2) and height. Their prices are about the same at the 300 dollar mark but the SL3 actually already comes with the nest.