The HV pump moves more oil with every turn regardless of rpm. It has to, the rotors are taller. And don't let anyone tell you it recirculates whatever oil isn't going into the oil passages back to the pan. It doesn't. It simply sends the oil not needed back to the suction side of the pump to be recirculated through the pump again.
If you're running bearing clearances at the upper end of the clearance spectrum (.0028-.0032 mains- .0022-.0026 rods) then I think a HV pump is a good idea. I also think a larger capacity pan is a good idea. All this talk of sucking the pan dry. If that's the case, you need a larger pan. People tend to look at the results and not the cause. If the pump can move that much oil, then it's doing its job, if the pan can't supply enough.... Get a larger pan.

Better yet, start with the larger pan and don't worry about it at all. Oil does more than lubricate, it also cools. The more of it you have, the better it is for the engine.