My Birdy is down to about 19 pounds and is dual suspension, so I'm up for the challenge. ;-)
Of course, I would get plastered by this guy
http://weightweenies.starbike.com/articles.php?ID=21 if he put two Pantour hubs on it.
OK, OK, both the Moulton and Birdy have far superior suspension, but...
By the way, was justification ever given for moving from 349 wheels back in the day?