I'm also interested in the benefits of snatch grip deads? Never really seen them in a program before, learn me!
It is just another way of training, really. For me, it mimics aspects of the snatch proper and is therefore useful to keep a level of conditioning whilst my shoulder recovers.
They place a much greater stress on the back because of the torso angle involved: if that is what you are training for or need to address then theyxare awesome.