I'm considering a fairing for my high-racer after spending 6 hours riding in steady rain with temperatures around 50 degrees Fairenheit (for this year's MS-150 in Colorado). I ride a Challenge Seiran, visible here: http://bikezen.org/pix/seiran/target0.html

My concerns:
-- easy to get in/out of the pedals quickly (in traffic, at stop lights) without bumping my shoes into the fairing?
-- do fairings scratch easily, and do I get reduced visibility or bad glare when that happens?
-- significantly reduced air flow while climbing mountains in the summer?
-- cost

Pros:
-- speed
-- less wind and bugs in my face
-- warmer and drier legs and torso in inclement weather

Some alternatives look much cheaper and perhaps more practical, if not faster: wind-resistant/Goretex clothing.

Thoughts? Experiences? Suggestions?