Alternative to Paramo Velez Smock (1 Viewer)

[Taxboy]

I'm considering getting a smock as opposed to a jacket to use for wildlife photography. Unfortunately the piggy bank won't run to a Paramo so any other suggestions for suitable and cheaper jackets please e.g. Hoggs of Fife, Struther. Ideally needs to be waterproof, wind proof and not feel like you're wearing a bin liner after 10 minutes walking.

I know the cheapest option is army surplus but I just don't do camouflage

Any recommendations please