I've polished the later iteration of Future, the Pledge Floor Care, without issue. I polish with Formula 1 Scratch Out first and then wax. I've never sanded it though. Comes out nice. It usually takes two or three rubbings with the F1 and then a couple with the wax, so you want to make sure you have enough clear on the model to do that.
I will say I'm more likely to use clear lacquer or Tamiya acrylic.