I think the KLR is too close to the GS as far as capability. If youre going to have two bikes, try to cover as much of the spectrum as you can. My 1100GS is great for touring, streets and ok on dirt. My XR650R is ok on the street, Ive done 400 mile days, but its not too fun. But when you get to the dirt, it will blow you away, hang with pretty much any bike out there depending on the rider, desert, single track, etc. And it has that race bred power that sucks your eyeballs back in their sockets.
Just make sure that each bike you have thrills you in its own way.
96 BMW 1100GS
04 CRF230 Plated -hers
Harley Davidson (noun) -The most efficient way to convert gasoline into noise, without the side effect of horsepower.