Tl;dr: Game is quite buggy and barely playable as of right now, but it has major potential.
FOREWORD: **** THIS GAME IS GOING TO BE FREE TO PLAY ON FULL RELEASE ****
Graphics look nice. Cryengine does this game well. FPS drops occur occasionally, but overall it's not an issue.
Gameplay is meh. The one playable mountain as of right now looks nice, bit its hard to get down the different trails to explore the mountain more. Controls are very loose, making it hard to get where you want to be, be it jumping onto a rail or just going down a trail. Tricks are pretty basic, with some grabs and spins. Multiplayer and 'events' are being added later, and (hopefully) some of the falling through the map will stop.
Customizations is pretty good. There are a lot of options to customize your skiier, from hats and gloves to bindings and poles. You can sort by category of equipment or by brand, and a lot of major skiing companies have their equipment represented in the game.
Verdict: Wait it out. If you want to support the devs, go right ahead. Just be warned that 1) This game is going to be free-to-play on release, and 2) This game is playable, but not for very long. The gameplay is fun as a time waster, but IMO not for its current pricetag