I'm eyeing the Nikon D750, and would likely purchase it in HK. If so, I'd definitely need a RRS plate too.
Sorry, I couldn't wait and had gone ahead bought the L-Plate from TKFoto, a little thicker than the RRS but it was ok as I brought along my travel RRS Ballhead fitted with the Lever Release and it was firm enough. But if I have the patience I would have gotten the RRS L-Plate.