New on this forum, finding my way and came accross this topic. Just ordered my AT one week ago together with a brand new type GPS mount.
BikePenR is a manufacturer and supplier of mounting brackets for GPS / satnav systems on motorcycles.
Based in The Netherlands. Ordering via the dealer (no direct ordering)
Looks far better than the Touratech adapter bracket, however also more expensive.
(CRF1000LAD, CRF Rally Red, Zumo390)