from what i know all 46mm brs have hex screws on the back, the only thing though is that is that the "do not unscew" screw should be in the middle of the box and it seems a little off from the pictures...
other than that, i think it looks like a huge step up in terms of br reps. and like i said, look at that lume shot. to me, that alone is a winner.
im currently waiting on one of ajoesmith's pvd br03 and plan on getting it relumed which will set me back around 140$...