After being in touch with Gritomatic recently, it seems that they will soon be selling articulated arms and lights for most sharpening systems. Hapstone, TSProf, KME, Work Sharp Precision Adjust to name a few. Hopefully soon!
I've used headlights and clip-on lights in the past and nothing works as well as the concept of an articulated arm with a small rechargeable floodlight (like they use on the Kazak Pro Black system I have), so this will be the way to go for other systems too.
You can really place the small floodlight exactly where you want it for best edge visibility and it does not interfere with your sharpening. It works far better than a separate desk lamp with articulated arm.