I’ve got a kampa air and I use the limpets and haven’t had any issue with them marking paintwork or breaking, I’ve had the odd one detach from the van but it’s gone back no problem, I find them much easier than the poles which I also have and there’s always gaps with poles so I think it’s try it and go with what you prefer, the holes on ours haven’t got any bigger so not an issue though I too was a bit wary of punching the holes initially.
BP