I think the quote is pretty hot, honestly. I recently attempted to write an erotica novella that kinda got into that, but now that I think about it, it could've used more of the "protection" part.
I think most of the pearl-clutching about S&M being "opposed" to feminism or women's liberation is bullshit. Some articles I've written on the topic:
"Inherent Female Submission": The Wrong Question
50 Shades Of Grey, Fight Club and the Complications of Male Dominance