Different bike model I know but my Ohlins shock was supplied with the rubber frame mounts for the reservoir and although I fitted it to the frame (just above the clutch), I used rubber-lined 'P' clips instead as they fit better, allowed me to tuck the reservoir into the frame a little and are more secure and IMO neater.
I was never happy with the look so made a bracket to fit it under the rear end, just in front of the rear wheel (as per 'S' models I believe) for which I made a mounting bracket but still used the 'P' clips (would have been better with a shorter hose BTW).
Maybe 'P' clips could work in this setup?