So, I was reading something off of an Old AOPA web entry and I saw they were testing Graphite foil heat tape on Lancairs. Pretty interesting:
http://www.aopa.org/-/media/Files/AOPA/ ... s/sa22.pdf
I found a website where they sell the stuff:
http://www.graphitefoilfabricators.com
Obviously not STC' ed nor something I care to beta test . However it is an intriguing technology for a low cost de-ice (anti-ice?) solution for smaller aircraft in cold IFR.