Hello. I have had an e prop on a Nynja. The factory had 3 options climbing, in between, and cruise option. I choose the middle way. The prop was quieter, and giving a a greater torque. I didn't get much in cruising speed. It needed a lot of right rudder at take off. Unfortunately a friend crashed my plane on a go around after only 50 hours. He had used that plane before a few times and should have reacted with enough right foot but he clipped a tree on the go around, destroyed the plane but survived. That was the end of the Nynja and the e prop. Of course he blamed the prop ;-)
A friend of mine who run a flight school in Zanzibar recommended the prop, he has been using them for years and swear by them, all on Rans aircrafts. The has just re done an engine at 2000 hrs, the engine was in excellent condition. He puts that on the lightness of the prop. If you wish. I can give you his email. Oh by the way, I got the savannah S after the pay off from the insurance but it came with a Duc Flash, so far so good, but difficult to get more than 5200 at take off on my 5600 ft alt home strip. If you ever put an e prop please tell us how it goes.