I have a few in use and I like them because it gives me more options for upright stem, I never like the look of the Technomic (not that a bulky threadless stem is sexxy)
one big advantage of course is you do not have to unwrap the bars to change a stem for fit.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk