the founder of Zana himself owns a Versys650, and has supplied this crash-guard to many of bike owners in India, and most seem to be quite happy. Though I havn't personally installed it yet, I have seen it on many V650 owners. There are not many options of crash guards, some like H&B/Givi/SWM etc are on the high price range, whereas Zana one is pretty reasonably priced. I will convey this thread to this gentleman, and if he could provide some inputs, or participate on this thread.
Btw, he is in process of finalizing a bash plate for V650, which many are eagerly waiting.