I'm wondering how much arousal you have in Karezza. It seems there is a spectrum here.
Door #1: Karezza is connecting with very little arousal for a long time --
Door #2: Karezza is having sex without orgasm, with a lot of arousal but short of orgasm.
I'm more Door #2. We have fairly aroused sex, at least I do, and sometimes my partner has an orgasm. Not sure that the Karezza police will come to my door and arrest me, but I'm pretty sure it's okay and we won't get busted.