They could be ordered that way but the CG may be such that it would launch the ball very high. Also being hollow means that there is extra distance.
My current 7i is 35* and 165, these are like 33* and 180. So I would have to get the U (50*) and expect the same distance as my 47* PW.
The numbers on the bottom of the club are not a huge deal, it is more about the gapping closer to the wedges that will get goofy
Quigley said gross....that's all