I can't answer the question about hitting the handle bars, but I have a 14" dark grey Freedom shield that I'd be willing to sell. It is in excellent condition; the only reason I'm selling it is because I got a Corbin seat that lowered me a bit and so I recently bought a Freedom 13" to replace the 14".
I also had a Windvest on my prior RG and can confirm the shape and performance of the two shields are similar, but the Freedom shield is thicker and has an excellent bottom trim and pre-installed wellnuts that the Windvest did not have. As my purchase of the 13" indicates, I prefer the Freedom shield to the WV, but both are good.
Shoot me a PM if you're interested in the 14".