This week a number of Decimator products got firmware upgrades and image flip/flop was one of the features added (something I'd been pushing them to do for a long time). The unit I think best suited for Steadicam is the MD-HX, MSRP $295, due to the following features:
SDI to HDMI cross conversion (either direction)
Configurable as a 1x4 distribution amp
23.98psf conversion to other flavors of HD
Image flip and flop (perfect for "poor man's low mode")
All functions can be controlled by front panel screen interface (no dip switches/rotary knobs), or via the UCP software downloadable at the Decimator site for both Mac and PC.
The name "Decimator" has become generic enough that there is some confusion. The company is Decimator Design (formerly Redbyte Design) and they still sell the classic Decimator 2 downconverter which will output analog composite video (CVBS). The MD-HX can downconvert to SD, but only output as SD-SDI.