Gulmarg is not a resort, so if you are into creature comforts don't bother. Also, the infrastructure can be dodgy e.g. the main gondola broke down and was out for eleven days in January. But if you don't mind roughing it, have a cast iron stomach, like adventure and want something different.... well.
And I'm booking to go next year. Two birds with one stone - I've always wanted to see the Himalyas and of course another chance to go skiing.