UCI i will refrain from commenting on the illustrious group of officialdom; they are just two silly for comment.
todays ride was a shake down ride of the new chariot of the sbgg, i have flipped the searing handles over to make them lower and fitted the return idler, so only have 3" of chain tube on the return side but have the full length of the drive side from seat to front derailleur in a tube, parts of the ride wear defiantly faster the gearing is just about right, it came with a upgraded crank set all very posh and bling.
i did find the chain was over a part of the derailleur that it should have been under so was rubbing, and kept stopping to do a bit of tweaking so dont know yet how much of a difference in average speed there is.