So after several months sojourn at my dealer, for sale, the IQ180 and Phase DF body return to base unsold.
I think the problem was that the dealer is unofficially constrained as to what price they can offer 'nearly new' gear at, so as not to p*ss off Phase. In any event, I heard of a few nibbles but no bite. They did manage to sell my extension tubes, my SK TS and 110LS and Mammy 28mm. So now I'm left with all the meat and little sauce - just an 80mm kit lens and a Cambo with Schneider 35XL.
Mind you, after nearly a year of trying to get wide angled shots that are sharp across the frame on a D800e, my feelings about the boomerang's return are ambivalent rather than negative. Imagine how many crappy lenses I could buy with the cash it would raise if it sold!