I think there is some value in at least one feathered landing during (certainly, initial endorsement) training, especially on prop aeroplanes with bigger engines.
Reason, of course, is the reverse swing as the operating throttle(s) is (are) closed .. once experienced, it stays in the mind, especially if the failed engine is on the outboard position.
If the engines are in the multi-thousand HP arena it certainly does focus the attention. Better to experience the fun with an IP sitting in the other seat unless, of course, one has a simulator of reasonable fidelity.