It was a close-run thing the day before the event, but we managed to finish the rebuild of my ULT "backpack" ultralight Steel Roberts bike (though not quite rideable yet - some tweaking still to do). It's now tipping the scales at a little under 4.7kg (though this is the "show" build - I wouldn't ride those track tubbies on the road - it'll be close to 5kg "ready to ride").
There's a show report about Bespoked Bristol (the 2012 UK handmade bicycle show) with some pics here:http://road.cc/content/news/55537-bespoked-bristol-roberts-pegoretti-foffa-kurtz-quoc-pham-velobici-lots-pics
The reporter seems to like the front hub (have got other good stuff from B-T-P on there too) , but we threw on an Experimental Prototype carbon cassette that arrived just in time that didn't even get a mention. What an outrageous piece of work that is! (see other threads here for info) - and cheaper than some of the Ti/Al cassettes out there...
I'll get some other pics once I get the bike back and can sort it out. If anyone wants to see the spec sheet, I will post that here. May even get to ride the bike later this year (fitness permitting!), and will report further.