Snow has been minimal in these parts for most of this season. However, we did get a nice little snow last weekend which made for 2 nice days of snow riding. I've had the fat front tire option for the Jones for 3+ years now and really like it in the snow. I have the Surly Larry tire on now, but previously used the Endomorph. Both get the job done nicely.
Seems quite a few others have been going with a fat front set up. It isn't cheap, as the rims and tires tend to be a bit expensive and most people will need a new fork that can handle a tire that can range from 3.5" to 4.0". But, it is a lot cheaper than a full fat bike build and they are super fund to ride. If you are thinking of heading down that path, check Surly's blog entry that gives a nice run down on fork options for converting your favorite steed. They also cover some of the nuances regarding hub spacing and disc mounts. Good stuff.