I have just returned from a trip from San Antonio Texas to Colorado via New Mexico.
My buddy took his KLR and I a Concours, on the trip.
It was a god chance to get some sort of evaluation done on a KLR although I was not on it, I did watch and learn.

We found the KLR to not have enough power for interstates, yes it would cruise at interstate speeds all day, but against the wind and passing big trucks was slightly beyond it, and running the bike at full throttle was eventually what happned.

Fuel consumptiom was good but no better than my Concourse, fuel range was good but less than the Concours.

Weather protection was not good at all, rain and cold really did affect the rider, the hand guards do not stop cold hands and the fromt wheel sprays water directly to the feet of the rider.Rain soked roads in cold weather were torture for the rider.
But above all wind noise was makeing his ears ring long after he was off the bike.

The good, it handles a dirt road in NM near Fence lake very well, I managed on the Concours, so it wasent that bad a road but not for my bike at all but I had little choise, it was go or back track ove roads I had just ridden.

Comfort appeard to be great, we had a few 400 mile days one 500 and one 660, although the rider was tired it can be done.

Luggage was adquate, but the system on the concourse would be a great item if it was adapated to fit a KLR.

Now, I wonder if its a viable thing to do, My current bike is great, yes the KLR is better at offroad, but in 2800 miles we only did 100 miles of dirt in wich it shined.
Thats a lot of miles to ride to get only 100 offroad.

I asked the rider would he do it again and he said yes, but he would take a Goldwing.

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If you really want to go, any bike will do