softy wrote: ....
It has been proven, they give little or no advantage in dry conditions. .....
Do you have a source ?
They don't always race in the dry.
I haven't seen anyone do a proper REAL WORLD comparison to show/quantify the real advantage or not. There are some wind tunnel tests that are one-sided, innaccurate or do not actually reflect real world riding. Wind tunnel tests without a rider mean nothing. As most people know, wind is not always in one direction for a single rider, and then there is the effects of the peleton.
All of the naysayers tend not to have ridden them, so there is lots of supposition and long bow drawing.
Mind you, if you don't like it, then that's fine. I do, as they are at worst pretty much on par, or miles better. They are no worse at all.