Many thanks all for your responses (and apologies I omitted to include the corresponding AW links from my original post - I'm new to this site).
I did attempt a not too hopeful punt with this WG last week. Initially there were a few comms back and forth - in an attempt to set something up (an outcall service) for the following day - however, on the day itself I heard nothing at all (despite my trying to engage with further comms).
Maybe a lucky escape - from some of the comments I have now read, I think this is one to avoid!...
Cheers UKP!