Just traded my 2006 WeeStrom after 75,000 for a 2012 S10 which I have only put 500 miles on since I got last Tuesday. I also have a 2005 FJR which I have had for about 70,000 miles also.
I look at the Super Tenere as a more comfortable, much more refined, stronger and somewhat heavier than the VStrom. I loved the Wee but the additional power, comfort and stability at speed of the Super Tenere is very much appreciated. Despite weighing more than the DL650 I feel that the Center of Balance is much lower and allows for easier and tighter U-Turns. The only place I find the weight an issue is pushing the Tenere around the Garage. Other than that I think it rides and handles as easy (if not easier) the WeeStrom --- ::021::r with a bunch more horsepower, traction control and no chain maintenance.
As a caveat 95% of my riding is road.
The FJR and Super Tenere are contrasted rather than compared. The FJR is Rocket Fast, but in return you are in a much more compact seating position, you are riding a 100lb heavier bike (and below 60 you feel everybit of that weight); plus you are riding a much hotter bike. The FJR puts out same major heat. I am probably going to sell my FJR for just that reason. I (and probably anybody else over 5'10") will find it easy to ride the S10 all day in comfort. Even without highway pegs. The FJR, while w/o question a much faster bike, requires anybody with a longer leg to start making a lot of modification if you are doing long 400 mile days or even a saddlesore 1000. I had to put highway pegs, peg lowerers, RDL seat, and bar risers to make the FJR tolerable for all day and continuous multi-day 300 - 350 day rides.
Unless I am having a day in which I want to just really push it ... the S10 is better in every way but flat out speed. The DL650 is also all day comfortable , but just don't plan on keeping up with "COMPETENT" riders on FJR's., 'busa's, cbr1000 etc/ But outside of that the S10 will stay up just fine and you'll be much, much more comfortable. Plus with all that plastic it takes for ever to clean the FJR. And moving it around the garage is hard on those of us with bad parts.
Hope this helps. The one thing I don't know is trouble free longevity with the Super Tenere. The FJR just runs, and runs and runs. The Wee Strom is the same. Just keep up with chain maintenance and oil changes.