The Whistler cordless DE1788 has no visor clip for visor-mounts.
I was thinking to use velcro on the underside of the RD and stick it onto the underside of the visor. This way, I have stealth and will have no use for the suction cups. However, the RD would be upside down but still pointing ahead on the roads.
Any impact on range, reception etc whilst the RD is upside down?