I replied to the same question on the VStrom fb page.........was it you?
Yes, I have one fitted to a 2013 650. It has taken me a while to get it something like OK. solo it was fine, almost from the off, but I ride two up most of the time and when first tested it was bottoming out with both of us on it.
I have wound the preload up to give it more height and taken some off the rebound, it is now better but not perfect! It is still 'harsh' on a big bump/pothole.
I am going to get a stiffer spring fitted.
Just to make you aware, when two up, the bike is carrying close to 30 stone (I make up the most of that
) ,
It looks well made but hasn't got remote preload. You adjust it with the ring at the top and a bar. On the 2013 the frame stops you having a decent but of movement with the bar, making adjustment a pain. If you won't have to 'play' once set it'll be fine. The rebound damping is reasonably sensitive with noticeable difference with a click of two either way. It is also height adjustable, not sure by now much though.
To sum up, I would fit another if I was solo, for cost I think it's good. However two up I would spend more money and get a 'better one', I would also spend more and get one with remote preload.