Are you talking Cloud Cap style turret gimbals? If so I'd be interesting in hearing more, as we're always on the hunt for more payloads for our larger (20kg) fixed wing aircraft.
Similar, but very light (sub 2kg) and probably cheaper, and much higher image quality on the visible spectrum (1080p without any digital stabilization).
Will be happy to hear from you - roee at phobotic is my mail.