I had them once and thought well wat a nice little snail it made some baby's.. But when my fish noticed them they where their lunch, never seen one again. So if you have some Apistogramma I wouldn't worry too much about it..
The P. acuta is also a lung snail and is more like semi-aquatic, it lives also outside the water and if in the water it prefers upper regions near the surface. Therefore it doesn't really compete with true aquatic snails such as ramshorn and pond snails dwelling the deeper parts.
I have them too and over the years i still do not experience them as a pest snail. It might be that i have too soft water for them to really thrive, i don't know, but this i can't say for the Ramshorn or Pond snail, i have plenty of them thriving instead. I occasionally find one in and around the aquarium in my garden, did put them in my indoor aquariums but for some reason, they don't like to stay there.