I dredged this up from the Gear Review Forum.
a.) Yes. Also the top of the shoe has a built in neoprene cuff. With these you may possibly be able to get rid of the gator gravel guards.
b.) Yes, no sand period from my experience.
c.) No, extremely light weight. Also soles are non skid and will make for great boat shoes.
d.) I bought mine at the Wilmington show from Firefly Outifitters http://www.fireflyoutfitters.com/
located in Boston. They were the only ones who had them at that time. Anybody who carries Simms products should be getting them in stock soon. American Angling in Salem NH was waiting for a shipment.
Mine are a size 10 and you are welcome to give them a spin before you buy. I think you will be truly impressed.
I don't own stockingfoots yet... and besides I still have my Frankenstein boots.
Also I forgot to add they drain water very quickly. Plus I was able to walk across razor sharp coral that would have tore my feet to shreads in regular sneakers.