No idea on wear rates yet as they've only been on 2 weeks. I did read somewhere that they have a 50,000km warranty but I think that was a yankie site.

Just dipped in here - considering an F2 - maybe.
I have a Disco 2 Td5 at the minute.
I ran Grabber AT2s on it for so long I forgot when they were fitted, easily 50 - 60K miles and found them to be brilliant. I changed the rears to ATs last summer before a long caravan towing holiday in France. Changed the fronts to ATs last week as well. They werent worn out, in fact still had loads of tread on them, just the sidewalls developing aging cracks.
These seem to be excellent tyres and Ive been well pleased with their predecessors.

just ordered 4 x Grabber AT's for fitting on Saturday with tracking to be done as well