Any skiers or snowboarders out there?

I've been snowboarding most years for about 25 years and you don't really need a huge amount of stuff. All depends where you're skiing and how close shelter is etc. If you're on a slope that's walking distance to a bar then you need very little. If you're off in back-country then you'll need a load of stuff to keep you warm etc in an emergency.

Mostly I just ride in snowboard trousers and a hoodie with gloves; it does help having something that's waterproof as you do end up sitting down a load on a board. Not so much skiing though.

I've never owned a pair of specific snow boots in my life either as I'm either wearing regular shoes (with some grip) or board/ski boots. In fact most times I'm away I'm either in board boots or nice shoes for a night out. Walking boots or something are perfect but trainers are fine too really.

I'd get a fleece and some warm trousers to go with what you have or get a cheap pair of ski pants. You can pick them up for next to nothing. You can wear a hoodie and your waterproof top and should be ok although sweating and cold is sometimes an issue as your clothes can freeze. Like I say, depends how close you are to the bar really.

It's like cycling really; you can do it in anything but you're more comfortable, especially in grim weather, if you have decent stuff. I've had great days boarding in skinny jeans and a t-shirt and grim days wearing loads of clothes. Gloves are, pretty obviously, really important though and I'd get some decent ones that are waterproof. Cold, wet gloves are pretty horrible.

Depends also on your budget and the poshness of the resort, but buying stuff out there might be an option too...

Not sure if that's any help or just ramblings. :-)