Had a chance to try out a DasMikro FHSS-5 receiver. Used it in FH5 mode will SSL with a PGS-CX2 servo and CODE10 worked as expected. I also tried it with SXR in FH5U mode and it also worked fine (I honestly can't tell the difference between SUR and SXR). I didn't experience any signal loss, clipping or other oddities. I also compared its range to a real Sanwa 492i, and it was pretty much the same. I haven't tried FH5U with the PGS-CX2 in the SSL port, but I'll try it over the weekend.

I'll still run original Sanwa receivers in my competition cars, but this looks like a nice alternative for bashers and some of my 'fun' chassis.