i own the beike bk 45, i using it with my d800e n tamron 150600. it work fine and never give me any problem so far.
but becareful 1 thing, the quick release plate tightening knot which have this extra compass have a very "IMPORTANT USE", it works like a alarm.
1.after several tightening n releasing of the quick release plate
2.the compass will fall off(warning)
3.must use the alan key to tighten the knot if not ur entire len and camera will drop, which almost happen to me.
Thank you for the sharing of this issue.