Wow, this was interesting. I think I enjoyed reading every posts here. Do I want to post an opinion? Sure I do.
Everyone one is human. I'll date a provider while she continues to provide. I'm not a jealous guy, never have been. I also have a philosophy of freedom. I am however very practiced in monogamy. It took me over a decade to begin to look outside of my marriage. When I find a provider that I like, she usually is the only one that I do business with, unless I ask her to bring in a partner, then it became a threesome but that's rare.
I don't mind being with a woman who is providing as long as she is emotionally honest and loyal to me. She can screw whomever she wants, it's her body. I've done traditional monogamy and it doesn't work for me. I need to feel freedom without punishment and I expect the same to all whom I am with. Having the door open makes the relationship feel less suffocating and time spent more gratifying for me. Even the drama can be managed as long as I feel that I'm not trapped. Marriage and traditional relationships is a trap IMO. So the answer to the question is yes, I could date or be a life partner to a provider.
I guess I want something pseudo monogamous, ie: threesomes, whether she brings a guy or I bring a girl. Honesty, loyalty and love is what's most important to me and I don't need to own the girl and have her make some unreasonable commitment of eternal and complete physical forsaking of all others to have it. It's damn hard to find, but when I do find it, I'm going to hold on to it.