Has anyone ever used the Spiderflex seat on a roadbike? I use a spiderflex seat on my mountain bike, and I would like to use this on a road bike.  Has anyone ever done this, or something similar?

I am 5'10" and 165 lbs (reasonably fit).

Yes, I know the 'the saddle horn is used for steering.....'  - but the spiderflex on my MTB annihilates chafing and discomfort. And I do about 20 miles a day on the spiderflex with ZERO - absolute ZERO pain or chafing. 

I know I will forfeit cornering and maneuverability without a horn.  Has anyone ever used such a seat successfully on a ROAD BIKE?
Thanks.
From this question and the other regarding clothes, I think that you would be better off showing the bike or bikes you are referring to when using the term "road bike".

Possibly you are not talking of a road bike like this:


Because it would be just a waste of the money invested in weight reduction / aerodynamics to use it in plain clothes and with a beastly saddle.

Now if you refer to something like this:


I would say a saddle like the one pictured is comfy enough for 11 miles, but you can uglify the bike for comfiness sake, police will not fine you. And casual clothes would fit perfectly aestethically.