I found, at The Container Store, a clear vinyl pouch (cosmetic organizer) with zipper opening that I thought I would share. It is the Studio Basics 2 Pack Mini Mesh and Vinyl Pages for $3.99. The dimensions are 5.5" x 3.5" for the vinyl pouch and slightly smaller for the mesh pouch. It won't be as water resistant/proof as the clear container for the AMK pocket survival pak, but I don't need complete waterproofness.

http://www.parispresents.com/sbcat.asp?BRID=8&CAID=25

here are some more waterproof pouches that may be similar to the RSK

http://www.basegear.com/omniseal.html

I have issues with the "zips" on the omniseals. The sizes are either too small (License Holder:), have two zips to deal with (Folding Wallet) or are too large for pocket carry (larger sizes). To each his own huh : ).