Review were mixed at World's where these handles made their Tour debut. I would think most everyone like the "fit" of the handle on the rod... with the quality of wooden handles over the years faultering... "loose fitting / wiggly handles" had become more common and the occasional off center drilled handle making for a "wobbly" handle when you would spin the rod ..... these problems were resoved with the seemingly perfect fit of the plastic handle to the rod.
At Worlds, the plastic handles were all "pin attached" like the old wood handle.... so they still have to "debut" the "quick change" attachment option. We'll see if that keeps the handles "snug" on the rod.
2 "issues" were voiced at this event. The handles are "lighter" in feel... and "slippery when wet".
Whether they are that much lighter... or just the standard "feel" of brand new tables was the culprit... the lightness is just an adjustment.... the slipperiness is the gotcha... as you'll have to experiment with wraps/rosins or anti-perspirants or risk losing some control...
my $.02.... Jim