Skyknight,
If your buddy is an AMA member, have him/her check "Model Aviation" magazine, March 2013 issue, pages 65-67 for a review of the Eagle Tree Guardian. The author resides in Houston, TX and his contact info is at the end of the article. He flies at JSC also. There are other jet guys that have used this unit in jets and maybe they may chime in here.
I purchased a Guardian unit and plan to test it in an Habu EDF but have not gotten around to it. Also, my tranny is back a Horizon for routine service.
Rgds,
Art ARRO