I've ran them on the rear of my scrambler. They weren't anything fantastic for off road or snow. Pathetic in any sort of slippery mud. Luckily I got them dirt cheap and ran them as street tires until they were bald. I don't see them outperforming the better known front tire options. If you can get one for stupid cheap, go for it, what do you have to lose? If you have to pay a similar price to say a front max or trail wolf, I would go with the proven options.
85 Kawasaki KLT 160
85 Kawasaki KLT 110
82 ATC 70
2000 Scrambler 500