On Thursday, July 30, 2015 at 11:15:10 PM UTC+1, Al McNamara wrote:
Why have a FES in a GP14 when you could have the retractable electric
self-launcher version - and forego the extra drag and ugliness of the
prop
moustache?

Speed of starting.

But speed of starting is irrelevant for self launching and for self-retrieving speed of starting is a tiny factor compared with probability of starting which, for any with well designed and maintained electric powered glider, will be a near certainty.