Website comparisons & searches for a light weight touring paddle lead me to view the Sawyer V-LAM Seafeather Kayak paddle at local sporting store.
First look at the paddle there is a substantial & ugly rib/extension of the paddle shaft on non power side of the blade. This should be one noisy paddle for other then forward power.
I never pursued this paddle further.
The positives are the carbon shaft has slight oval shape for indexing, and has nice appearance on one side, and very light weight overall. Cost is in range of typical FG/Carbon touring paddles.
A further negative is the coupling joining the paddle sections would need further testing. To me it looks subject to slipping.