Personally, I like that prop when I'm instructing. It's espeically useful when teaching/learning approaches as it provides a bit of extra braking, giving the student more time on final.

After solo, I recommend they go to a normal prop.

I have a well-used Evolution trainer engine in an LT-40, and I use an APC 11x5 prop. I pulled the baffle out of the muffler, and that combination works great for a slow flying plane where you want a lot of pull. The Alpha is a cleaner airframe. With a 10x7 and a big spinner to smooth out the airflow around the front of the plane, the Alpha can really haul tail (for a trainer, but it's the fastest trainer I've seen)