Low power isn't nasty in a twin, it's docile. You may not maintain altitude, or climb out of a failure after rotation but that's not a training requirement anyway. Multi training isn't really about physical skill and prowess, twins are not difficult to fly on a single or both, that's why the ratings can be earned in a minimum of time. There is really only one thing you have to learn physically in a twin and commit to muscle memory and that is "dead foot, dead engine" and I have a nifty little drill that can be practiced anywhere: Push down on your left foot, roll your right hand to the right(toward your pinky), push down on your right foot, roll your right hand to the left(toward your thumb) just keep doing this over and over.
The one thing I don't like in typical multi training is the Identify, verify, feather routine using the throttle to verify. I am hand on the throttles until I hit the gear switch as soon as I have positive rate, from there my hand goes to the props. I can verify the dead engine by pulling back on the prop lever, if I don't hear a change in pitch from the running engine, I can continue back into the feather detent. If I hear a change, I have the wrong lever, not highly likely since my hand is tuned to oppose my foot that is mashing my rudder by the previous drill. This saves about 3 seconds and eliminates a possible point of failure grabbing the wrong prop lever after verifying with the throttle, and it also keeps my eyes forward monitoring my airspeed, attitude and path rather than looking at my quadrant making sure I grab the right lever.
I think there may be one instructor out there teaching this technique.
What the real thing you have to learn with a twin is evaluating more options BEFORE you take the runway. The difference in flying a twin isn't physical, it's mental. SEL is to VFR as MEL is to IFR if you get the analogy.