I agree with Holoquest. Durability is decent.
I can't say, for sure. The pads cost, what, 125.00 for front? 35.00 for rear..? So, oit back I will save 10.00 trying to get that last few thousand miles ...a litle more, out front, but not even close to a tires price.
Much like tires, these fit into that "safety" category. I've never ran a safety item untilmot was actually worn out. At 2mm, they go into the trash.
I'm not sure you will match the durability of stock pads. The stock pads are really hard and are made to get a bike through an extended warranty, and hopefully stop the bike. They don't want customers in there hitching about pad wear. So, they probably will outlive a performance pad, but it's not really something to be proud of.
So, even of you don't buy the front Vesrah, for sure buy the rear. You will shit when you push the rear brake,and feel it working.
Once you try them, I don't think you will care if they might not last as long, although Holoquest sort of shot that idea in the ass.,,,that's great mieliage.