I saw one in July of 2009. I took an old timer fly fishing up on the Montana side of the Idaho border. He was almost 80 and retired from being a forest ranger, this guy had spent a ton of time in the back country but his wife didn't want him going out on his own at his age.
As I was driving back towards town after a morning of fishing, this thing lurched out on the road just ahead of us and we were both dumbstruck by what we were seeing. It looked to be the size of a cub, but the hair was all wrong and it moved like a ferret. It took a few more lurches and it was gone down over the side. Whole thing was maybe 3 seconds but I'll never forget watching that thing move. My fishing partner said it was the first one he had ever seen too.
It'll be interesting to see how many more guys have seen them.
Thom