Thanks Chris, your advice (along with b4rney's Foscam page http://wiki.linuxmce.org/index.php/Foscam_FI8908W
) has enabled me to get this device working motion wrapper.
Regarding the PTZ problem; I have added the camera a second time with the Panasonic template, specifically for use with the relevant orbiter scenario (giving me PTZ), with the first one (added with the generic motion template) dedicated to recordings via motion wrapper.
I was concerned there would be a conflict of some description, but following various PTZ movements through the orbiter, combined with much jumping up and down, hand waving, etc, to trigger some recordings, it all seems to be working fine. Have I overlooked any reason as to why this might be a bad idea?