With a flat-bottomed trainer wing you either manage the throttle or spend all your time feeding down elevator. Fist lesson on a buddy box (or with "covered thumbs from behind") is to manage the throttle for level flight. I then teach them just as if it were a full size small aircraft: throttle controls altitude.

With mode two the right hand does most of the "problem entering" flying and, yes, sometimes early lessons are forgotten when it becomes a flurry of sticks to try and do something that will rescue the model. A student who has gotten used to "explosive" takeoffs (as opposed to learning good technique) may go into afterburners in hopes of making the model respond faster. But a faster response to bad input is a bad, bad thing.

I don't see having a .46 with ball bearings on a trainer as a bad thing provided the basics are covered BEFORE the student gets off the buddy box.

For someone learning on their own - all bets are off.