Fwiw, Hobbico is bringing out the Electristar, it's a .40 size electric trainer. It should fly exactly like a glow trainer in the same size range. Wingspan is 63", weight in the 6-6.5lb range, exactly the same as a .40 size glow trainer. It comes with a brushless motor, radio, etc. everything except batteries for about $350, about the same cost as a glow trainer/engine/radio setup.

I expect to see a bunch of these at my field in the next few years.