Originally Posted by The Griz
No. I would not. The Tiger 800 XC is:
-Has lower ground clearance, making certain parts (header in particular) seem very vulnerable
The F800GS is:
-Has higher ground clearance
^The above is what would seal the deal for me if you were interested in taking it on anything more challenging than fire roads. For my strength/ability/size the weight is not the limiting factor in offroading the F8. Nor is it the quality of the suspension. By a loooong way, the single greatest limiting factor I find is ground clearance. As the Triumph is lower still, I think you will have problems using it on anything remotely like "proper" offroad.
For a 100% roadbike? I'd be very interested in the Tiger.