According to the booklet with the new cast album, the only gender change was having a woman play Pirelli and Fogg in London, though she played them as men, not as female characters. There's no mention of a male Lovett, nor do I recall having seen anything about one.
It would be interesting (strange), but the biggest question I have is "Why?" I can understand stripping a show down to its bare essentials to create a certain effect with a production, but unless it's for the sake of ensemble parts in the vocalscore, I don't get why you would change the gender of a major character (which is NOT what was done with Pirelli/Fogg. That was a female playing a male character as a man, not changing the gender of the character completely, to balance out the vocals during ensemble parts).
To me, it's the same thing as making Tracy Turnblad a fat gay guy. Sure you can stir up some interesting points with it, but why do it? Please don't get me wrong. I'm all for the reinterpretation of material, but there's a point where reinterpretation becomes rewriting, and then you're not serving the authors of the play as they would have wanted you to because you are not getting THEIR message across in the performance, but YOURS, and most audiences don't give a damn about what you have to say.
-- SDG