if you don't hit it off as described in your last paragraph (when you said "Some people I am more comfortable with than others and that is just how this biz goes") do you think the client is going to be satisfied if they pickup on you not being comfortable or not clicking with them? I'd say if you found the meeting subpar the client probably did also. sure, sure, there is probably some who do get off to such a thing but I'd say that's a minority.
^^^^^^^this^^^^^
It is very obvious when chemistry is not right and you don't hit it off. This is true of all providers and clients alike. When a provider has an issue with you the service is drastically reduced and thus ymmv. The provider doesn't enjoy, the client doesn't enjoy. When it's an obvious case to me that the provider is not into the session because of me for some reason I just make sure I don't see that provider again and I also usually don't write a review. Poor service, fake pictures, upsell, overbooking, late or missed appointments are all a different thing. Some cases of ymmv is a simple case of a guy that should have taken a shower before the appointment.
When a provider clearly states ymmv it should be buyer beware. If you don't want to take the chance you should find someone else.
I would say a lot of the most popular providers on this site are very much ymmv. I also think most of us have had one of those experiences and not posted a review.
I for one would have no problem seeing you. Others here? Well I guess ymmv.