I know for sis before we want even look into her getting certified, she wants to look into doing a Try SCUBA thing. It would suck to put up all the money / time investment doing the book work stuff /getting the personal gear just for her to get into the pool and find this is not her thing, if we do the Try SCUBA at worst we have a not great afternoon and out maybe Lunch and a tank of gas.
As far my pump goes, less than 33 feet is within spec and no issues. Unless I am going below 100 feet there not much a of chance physical damage to the pump and at least with my pump (Medtronic Synchromed II) there is not been any reported instance of rupturing due to pressure from diving (just a partial Reservoir collapse at over 100 feet down). At around 60 feet my pump might slow down about 3%, but will resolve itself as I make my way to the surface and after discussing it with my pump doctor she doesn't an issue doing the 2 or so dives at 60 for getting ab open water cert. So I won't be able to go for an advanced/ deep water, unfortunate but small price to pay to still be able to dive and keep my leg issues under control with the pump