I have a BK/WM9 YM and it is fantastic. I have been surfing, swimming in the pool, snorkeling, shower...the thing never leaves my wrist and it is rock solid. It is good for +10/12 seconds/week and looks fantastic. I have been to a few ADs looking at other watches and they noticed it and commented without even a second look.
If you are lucky enough that BK has one left...dive on it!