Its about the skill of the lady performing it and that some men seem to have a mental block telling them they cant feel stuff through a condom, even though that condom is often very thin and makes little difference. For me suction is irrelevant and doesn't feel good. I suggest you see someone better at oral, just think about the feeling and forget the condom is even there. I'll give you that owo is slightly better, but if you can't enjoy ow at all then she's doing it wrong.