IMHO success depends mainly on whether you can see where you go. Drop out of a low overcast during night and you're back to "switch on landing lights, if you don't like what you see, switch'em off again" while you might have better options if you can see an airport in range or at least look for a flattish, longish place to set it down.
We trained this on the SIM and I think it is a good idea to do so, but I wouldn't bet on the experience to be fully realistic, especially regarding availability of engine driven hydraulics.
Having (hydraulics) power available to move slats/flaps and especially a speed brake thus allowing better control of glideslope would be helpful, too, as most of us are probably not too good at judging how far we'll get without thrust lower down (e.g. when to turn to base/final) and having flaps available would improve survivability d/t lower speeds.
And why is it called "dead-stick" if it's the engines that are dead?