I would certainly think so.
I've asked my wife (both as a wife and when she was my girlfriend) if there was anything she wanted...I was willing to do it, but she seems to have no fantasies. As long as it was not really dangerous, I would have done anything she wanted...even if it was something I did not really like...I even suggested one of the characters from her romance novels. I explained to her that what turned her on, turns me on. But no soap.
Trying to convince her to play medfet with me has not gone well. Before we were married, I did not tell her the medfet part, but I did explain the enema aspect (medical theme with a balloon retention tip). We lived thousands of miles apart, so we talked about it a lot, and she claimed to be willing to do it for me. We would even talk about it in detail, and she would tell me the things she would do to me. I would bring all the gear, and it would...never...happen.
The one time it did happen, soon after we were married but stiill living apart, I had to beg and talk her through every single tiny bit on how to do it. She had a very good time (I could tell she was enjoying it, there was physical evidence of that). It was one of the best intercourse session we ever had, even though it was on the bathroom floor. We still talk about it.
Since then, she's only done it a couple times and both times I've had to beg and talk her through it. I've told her the full medical-fetish thing, but she is still reluctant to play along, even though she enjoys it when we do.
I should add that she is a nurse and has been for >15 years, and we both have medical backgrounds. It's not a "moral" thing to her at all; we've actually had words on this because I get upset that all she seems to care about is having a good time for her, then she looses interest and wants to go to sleep. She feels bad if I don't "get off", but not enough to be willing to do more for me. She says she's just too nervous.
This makes no sense to me. I could deal with it, and of course I would have married her with or without this, but it hurts my feelings that she was so willing to talk about it, but unwilling to actually do it. She has a good time no matter what, and I think she's just not willing to put forth the effort for me...which is sad.
I finally made her play patient (though I did not do an enema, I don't think that's her thing) just to show her how I would do it, and she enjoyed it (multiple orgasms while restrained). But I just can't get her to do it to me except on two rare occasions, and even then she's had a lot of questions that have taken away from it all. She wants me to tell her what she should do, I keep telling her that it is the loss-of-control that's the fun part for me.
So yeah, I think it's much easier to get a guy to cooperate.