Should I make the tubular leap ?

I'll buy the argument that the deforming a tubeless tyre will be more efficient, but I'm not sure about the weight. From Hutchinson's website the Fusion 3 Kevlar ProTech weighs 210 g, the Fusion 3 tubeless weighs 290 g. A Continental Race Light inner tube weighs 70 g.

you don't have to run them at lower pressures, but there's less risk of a pinch flat if you do. even at a standard 100psi there's less material to deform and less rotation weight, so they feel really quick.

http://road.cc/content/review/5490-hutchinson-fusion-2-tubeless-700x23c-...

you can run any old tyre tubeless if you want to, same as you can with mtbs. some work better than others...

I looked at tubeless for ages, but was ultimately put off because there is only 1 tyre to choose from, whereas there are loads of tubulars. For example, a quick check of what's in stock on ChainReaction's site shows zero tubeless tyres, but 16 different models of tubular (not counting all the width and colour options).

I would love to ride tubulars, but have always ruled them out because if you puncture then you're stuffed (unless you have a team car following you with a fresh wheel). You can't repair them. (Though I think you can send some models back to the factory for repair.) You can carry a spare tyre, which is what the riders have on their shoulders in historic photos from the Tour de France, when the rules didn't allow support vehicles and they had to fix their bikes themselves. But sticking on a tub appears to be something you want to do in a workshop environment, not the roadside. How does it work on the roadside? Is there enough glue residue left on the rim to hold it there and get you home? Tubs supposedly deflate more slowly than clinchers when they puncture, so you may be able to keep pumping it up 'til you get home.

I guess that time trialists are the amateur riders who use tubs the most. They'll use them on their best race day wheels, when they are racing on nice roads and it isn't too far from help if you do puncture.

how about running tubeless clinchers as a third option? they have a great feel and low weight and rolling resistance, and they're easier to fix when you're out and about - just carry a spare tube.