Originally Posted by songfta
I would also recommend a protective cup - seriously - because straddling slalom poles isn't very nice to the "family jewels."
Otherwise, the aforementioned equipment is all spot-on.
I think even the most ergonomic cup would adversely affect my skiing. I've had such straddle incidents before, and all I can say is it will teach you very quickly to keep a hand in front of you while in a flush.
I never wore a face guard but I definitely should have, as I took multiple gates off the goggles/face. The future dentist in me definitely recommends a slalom bar for helmets.
You don't need padded race gloves if you have a full pole guard, but they do help and I find that they are the warmest gloves available. (I like Reusch, Auclair, and Leki WC)