My Neotec mount for the G9 looks much like that shown above on the Kawasaki site, except for 2 things: 1) I did not take the speaker wire up and over the crown of the helmet. This is actually preferred for better radio reception. Instead, I routed the wire around the back of the helmet and I don't know what effect it has on reception, although I am able to pick up stations. In hindsight, I would probably take the extra time to route the wire the "up and over" way. 2) I velcroed the speakers as shown, but I did not replace the fabric liner that came with the helmet, fearing that the extra layers would crowd my ears. (My ears seem to prefer no contact with the helmet, especially on long trips.)
During installation, I left the mounting brack loose until I had everything in place and I had tested the reach of the mike, the sunshade operation, etc. Like you, I strongly preferred to avoid the stick-on option. Good luck!