I had the Ohlins side mount but didn't like it. I tested it on a lone straight away over 100 mph and had headshake on the lightest setting. I then stiffened the resistance and the motorcycle didn't like that either. I actually planned on buying a used one here but missed out, which might have been a bonus.
A buddy told me a steering damper is a band aid for improperly set up suspension. I suggest you start there. I recently had my suspension dialed in for me at a track day and the bike handled like never before, even at speeds exceeding 100 mph.
Have the bike set up by a professional to your weight (gear included.) Heal the scar first.
The ghost is right, before I had my suspension dialed the bike had the monster wiggle big time. Now it still does once in a while but its not the handful it once was. Now it just helps more if I make a mistake with the throttle and pick the front up when I'm not expecting it, hit a ripple of shitty pavement or just do something that pisses the bike off. But while I was riding around waiting to have my issue with my failed DP damper I DID miss having one.