BTIZ wrote:

Most motor gliders of the "Katana Extreme" variety do not have enough
"oomph" (HPower) to get a regular glider into the air.

I don't know where you read this. Here in Europe, Super Dimonas (aka
Katana Extremes) are very commonly used as tug planes. Mostly the 115hp
version. Climb is not breathtaking, but it surely works even with two
seaters.

Stefan