It would be good if you (or someone else) could give details of which girls don't do OWO
In all the years I have been going, I have only encountered one girl who didn't do OWO - and it's the recent arrival Danielle.
About a month ago when she was new, she was being very cautious in terms of health and safety and didn't do OWO, nor
allow proper penetration (keeping her hands on her pussy whilst in mish, and even when in doggy, she was holding onto my
penis etc). She's tall, beautiful, has smashing natural DD tits (which she wouldn't allow me to lick or touch), so it was a shame that she was so inhibited.
I sense that she was being over-cautious, and with time, as her nerves settle down, she would be more open, flexible and willing. Next time i see her, I'll be able to gauge if she has reached there.
Other than that, I have occasionally encountered the odd girl (who normally do OWO) mention that they have been to the
dentist so would prefer to do OW on that day. Perfectly acceptable.