Well, I believe kejar made the port file if I'm not mistaken. (Which I might be.) And if that's the case, he's moved onto the Thunderbolt so I don't know anybody else talented enough to make something like that besides maybe Team Liberty. (In of which he was a formal member.)
yes kejar made it and yes he has moved on to the thunderbolt but he also expressed an interest in producing a gingerbread version of gummyjar so who knows, he may work his majic again at some point. realistically though if someone was to take a little time comparing the two builds they could make their own.