I'm not very good at not buying anymore bikes.
Firstly, massive thanks to Xavier (Raging_Bulls) for being a goldmine of knowledge about Sbikes. I spent all week pestering him for information about them before going to see this one today. I'd almost convinced myself against buying it, but I was really intrigued about how they ride and after a quick spin and chatting with the seller I was sold, both based on the feel of the bike and its apparently rarity - I do like something unusual.
I believe it's a 1993 - shimano date codes on the brakes are 1992 and on the cranks 1993, both of which are the Altus A10 it was originally fitted with.
Plenty more information to come.