I'd like it, though the one time I tried tires like that they really sucked on pavement. The curves I mean, I don't care about the buzzing. So I would go with more street oriented dual sport tires.
That gas tank looks smaller than the stock one. That's a bad thing.
At the Redmond rally a couple of years ago somebody had a home-made R65GS. I can't remember his name! He's been on this forum.