Skydriller,
I am not current on the North Sea at the moment and have never flown front seat in the Dutch Sector (although I have been a pax there once or twice) so I can't comment why one company flies when the other doesn't. I am not sure that it is appropriate to describe a company specific approach procedure on a public forum.
I agree with McMurphy. What might be legal may not be safe. I don't see anything wrong with descending to MSA (and I stand by an MSA of 1500') to break cloud. But how many private/GA pilots have the equipment (radalt, radar, audio/visual alerting device, autopilot etc), training and experience that commercial aviation deems necessary to carry out these approaches safely? It is far easier to become spatially disorientated over water than over land. 500' over the sea is not the place to get the leans either.