Interesting.
My local dealer has an 800DE demo bike and I had to opportunity to take it out recently while I was having a set of new tyres fitted to the 650 (Avon Spirit ST's, love em) but decided not to bother as having returned from a seven day trip up to Scotland and back, that of all the ADV bikes I saw on the trip, and there were lots in Scotland, those with 21" front wheels looked tall and ungainly on the roads.
Now I appreciate that how a bike looks to someone else is of no consequence, but with my engineers head on I just felt that the AT's and T7's I saw looked more like they were on the road in transit from one trail to the next, rather than being used as road bikes.
Let's see if the autumn brings any surprises.