I'm really enjoying having the Troll. It's become a great bike to grab when I don't know exactly what to expect. That's exactly what I did on Thanksgiving day.
Did it work? Nope. The gravel is so big and loose that your tire just buries itself without gaining momentum. I think it would work with the maximum float of a Pugsley. But the Troll was no match. I could try it with a super wide MTB tire eventually. Right now I'm running more narrow touring tires.
Get out there.