I like the look of the one that they have on their website for the bird. I'll call them tomorrow for a price. I'm assuming that I'll send them my old seat for re-covering.
He will allow you to pay a deposit - and make you a seat from a base he has in stock ( he keeps OEM seat bases for popular bikes like the BB )
When your seat is ready - you pay the balance - you send your seat - he sends the new one to you - about 48 hour turn around.
I went with his AIRSTREAM design in non slip material , 2 x ultimate comfort inserts & cbrXX logo stitched in.
Was £220 all in.