| I love em! I have always had them on the Multi since changing the original scorpion syncs. I get about 1600 miles from a rear and almost double from the front. I am pretty heavy though and the Multi gets some hammer. Also have them on the 996r (corsa front) but not paid any attention to the wear rate/mileage on that. No problems at all gripwise in the dry as bits of the multi touch down before you run out of grip. I find them excellent in wet/damp conditions as I ride the Multi all year round. I ride the same roads as you probably do (Hawes/Middleton/Alston etc).
I only started using them as a few years back a got a pair at a good price as I had always been a Bridgestone lover 010 56ss 56 etc. Have used em ever since. I dont doubt tyre technologies moved on and past me by but I really cant fault the Diablos. Maybe a little more mileage out of them would be nice. | 
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