I had some waterproof mountain biking gloves a few winters ago, they were the mutts nutts. Kept my fingers warm, waterproof, and great for dexterity (even when it comes to getting change for customers).
They looked very similar to the ones just posted ^^^ The only problem was they tended to stink abit after using them for a few weeks.
Thats why ive gone for the Glacier Perfect Curve Gloves. If i need it i will get some inner or outer thermal layer, but i'll see how it goes first. Living down south its not as cold as it get up north, so i might be ok with them.
I actually remember my fist winter without any gloves, they get wet, they got cold, they went numb.. then once they started to warm back up - THE PAIN!! - I was almost crying