I have a 650 Strom and it's a nice compliment to the FJR. It does everything well. It's about the perfect bike for Alaska because it is very comfortable for long pavement distances (and the vast majority of an Alaskan trip is long, lonely, high-speed pavement that would be taxing on something like a KLR), but can handle a forest service or gravel road in stride.
But it's not a dirt bike, and it stretches the definition of a dual-sport. It has terrible ground clearance and any off-roading whatsoever really needs a skid plate and crash bars to protect the low-hanging pipe and vunerable oil cooler.
If you're just looking for a hack-around bike to ride to do trail riding and have no need to tour or do long-distances, something like the DRZ400S or KLX250 can fill the bill great. KLRs, DR650s, and XR650s all are slightly more trip-worthy but less dirt-worthy. For a dual-sport, you never want to overbuy - weight is the enemy. The DRZ has been at the sweet spot for a long time now - not too big, not too small, okay to get to the trails, okay on the trails. (Yep, I own one of them too.)
The KTM950 and GS are great bikes for what they are, but at $13K and $16K, they're hard to stomach as bash-about bikes - a tipover in the dirt can run you thousands. The KTM is more dirt-worthy than the GS (and the Strom), but KTM's are more race-bikes than street bikes so you've got to come in ready to attend to their special needs. They're the Land Rovers off off-roading. The KLR is the Jeep Wrangler and the Strom is the Honda Pilot.
- Mark