I had them on my KLR for about 2-3k miles. I liked them a lot. After that amount of miles, I could barely see any wear and I sold the bike before they wore out.
Compared to Pirelli MT90's I thought they were slightly worse on-road (started to slide/lose grip sooner) and slightly better off-road. Wear seemed like it was going to be better than the Pirelli's which I changed at 10k miles.
I'd say, for about $90-100 for the pair, they are worth a shot.