I have a very similar setup on my Concours that I got from Projekt D
. In this case the piece of flat that links the two locks lays flat so can be attached under my top box mount. I don't know if it can be mounted to a Strom but it could probably be modified to do so.
Just putting it out there as another option if you want locks that are mounted up higher.
'08 Vee: Suzy luggage, Crash bars, Rad Guard & front mudguard extension, Zumo 550, Oxford Hot grips, Stebel, PC-8, 12v acc, Scott oiler & lube-tube, Remus Revolution Cans, Bark Busters, Phillips Extreme vision +100 bulbs.
'08 Concours 14: Rad guard, Stebel, Oxford Hot grips, Projekt D Screen, Hugger, GPS mount, helmet locks & front guard extension, Zumo 550, Stebel, Phil's rack & Givi V46, Sheepskin seat cover, Phillips Extreme vision +100 bulbs.