Hoooly shit, doing this with Gard would be such a different dynamic. With Harry or Marcone, Murph would be Murph again as soon as she put her pants on. I don't really know how it would go with Kincaid. But with Gard? You take away the gender politics of a male partner and add the whole Valkyrie thing...that could get intense in both the sexual and thinky ways.
Re: murphy topping from the bottom