Hmmmmm very, very interesting Rob.
I'll have a search for a supplier. If it isn't too expensive, (and if I can get some bobbins for a decent price too), that looks like it could do the job perfectly! :D
And yeh Phil, I think Zebra (whether it's with a blue coil or not in the end), is a safe bet, as it would look good no matter what the hardware colour was...