Yes, I got a bathmate too after I almost got water in my brass pump. The idea was that I could pump every morning while showering. How great would that be!
However, I can’t get a seal with it standing up, I have to lay down in the tub. So I don’t use it unless I have a huge block of time with nothing else to do (which is NEVER)
Another thing that can be good about air pumping. Sometimes I get the vacuum going, detach the pump, put on a HUGE pair of board shorts and then do whatever it is that needs to be done around the house - load the dishwasher, etc.
Most times I just want to sit there and zone out, as the feeling is very pleasant and relaxing. But it is nice to have the option to do something else. Difficult if not impossible with water.