I thought I would mention a new version of Hilltreks "The Dee" wading jacket.
They used to do a heavy weight Ventile version but they have updated the jacket now.
Some of you may have heard of Cotton Analogy material as used by Paramo mountain wear providers. It is a "soft shell" waterproof material that does not rely on laminates such as Goretex, so will never delaminate and leak.
Its extremely light weight too.
They have used a Ventile, thorn proof outer with the analagy "pump" liner that actively transports moisture away from the body.
But the best thing is that you can have it customised at the wortshop in Aboyne. Well worth a look and its great to go along and see the jackets being made.
http://www.hilltrek.co.uk/acatalog/Dee_Chest_Wading_Jacket.html