I am also RL glider pilot
Me too

and notice that people are starting to overlay their scenery with google earth textures on Condor soaring. This is apparently ok for personal use and some companies are also providing scenery packs to purchase with Google earth licences.
Does anyone know what it would take to convert these textures for use within EECH??
I believe several of the new maps do use textures from google earth. That said, EECH probably isn't the most appropriate place to use satelite or aerial photos for textures. With helicopters you're mostly flying very low, under 500 feet. Satelite photos look great from high altitudes, but down low it doesn't look so good.
http://www.postfrontal.com/condor/index_ENG.php
If I'm not mistaken, postfrontal doesn't use google earth, but rather have bought high quality aerial photographs they've used for their textures.