There are a few snowskate specific shoes available from Volcom, DC and DVS. For the most part you are looking for a waterproof winter skate shoe. Mainly a flat skate style sole and a warmer hightop. You can nikwax them up and make them waterproof if you have to.
It depends on style and conditions. A short ski will be better for tricks where as a long ski is more of a cruiser. Short skis are good for firmer snow. Something a little larger, like the 41 wide or the dudeski, is better for sloppy spring conditions or a few inches or more of fresh pow.
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