As maintenance crew, we do it sometimes when taxiing for a high power run. Start second engine during taxi, shut it down during taxi in. Or don't start it at all. Then again, we don't carry any load. But personally I prefer a clean cockpit without red warnings during taxi.
There is a ATR42 crew over here that always taxi with one prop windmilling. Also saw it on the Lockheed Electra with two engines shut down. Engine shut taxi seems to be more like a turboprop issue?