This is one of those cases where full-scale training and best-practice for model flying are different.

In full scale, you have to be able to speed up, turn either direction, etc, otherwise you die. You can't count on being near an airport or an airport you are familiar with, so you need to be able to "keep flying". Landing off-field is a bad thing, and only done once everything else has failed. And as I understand it, full-scale planes are all flight-tested and certified to meet minimum performance standards on single-engine. Full scale pilots also have instriments to measure things like yaw, airspeed, and how close you are to a sudden snap-roll.

On the other hand, models are near a runway. The pilot probably knows the field. You can land any direction you want doing any approach you want (some safety limits here, obviously), and a slow off-field flair in to the bushes usually just results in a walk, but not damage. On the other hand, the lack of any kind of feedback through instrements or "seat of the pants", combined with the difficulty of judging things like airspeed, AOA, and yaw angle of a turning model at a distance means that you easily go from "safe" to "crash" much more quickly with much less warning than in full-scale.

So, for a model, the idea is to stay as far away from any condition that causes the plane to yaw around the dead engine and enter a stall-spin-crash situation. Cutting the other engine and going totally deadstick into the bushes is a better option with many models than trying to streach a glide to the runway. In full-scale, that isn't really an option at all.

So yeah, flying a twin in RC is more different from a twin in full-scale than flying a single in RC vs a single in full-scale.

Now, if you *want* to practice engine-out in RC, it's not a bad thing to be able to do. The more you know your model, the better. But it's really hard to practice this stuff with a model when you can't get all that high up, so you can't have several thousand feet of time/altitude to fix a mistake.

And I'm not saying "never" streach a glide with the single engine, or never turn towards a dead engine. Some models in some situations are fine with both. I had an engine out with my (overweight) Mossie, and I did both. But I also lost the engine while going pretty fast, and I kept the speed up, and landed fast with the flaps up.