Personally, because I already had a good touring paddle and a cheaper "recreational" paddle for touring backup, I have only used such paddles in my duckies and never noticed a problem.
Perhaps if I were a hard shell WW boater with experience with WW paddles, I would not be happy with my current paddles.
Also, the rivers I paddle, have flat sections.
It does seem like the WW paddles I've seen are on the shorter side -- maybe a bit too short for the wider duckies?
What type of paddles are folks out there using to ducky?
Second: The Boat People are one of the few retailers with a lot of ducky info on their website -- particularly ducky info that is not just clipped from the manufacturers marketing materials -- that in itself is a service to the community. Personally, I won't accept the previous poster's general conclusion about them (with no details in the body of the post -- just 7 words in the subject line to support the conclusion) unless I hear others chime in supporting that conclusion with some details of their own.
The problem is that you really need longer length paddles than are available in stock WW paddles. lrcable New