I also have a pair of those and I like them. You kind of need to adjust your expectations and realize the specific use case. Hi-Fi they are not, but the point is to leave your ears open to the sounds of your environment and in that they excel. Would recommend.
I have one, but I don’t have any sort of routine with it. I’ve used it here and there if I want to sort of extend the working time of shaving my face. Let’s say I’ve got a night out, maybe spending the night somewhere other than home, and I want to still have a smooth-ish face the next morning, then I’ll use it.