I use and like my Arktis made coat and trousers. Country Covers sell a great olive green colored waterproof jacket made by Arktis: http://www.countrycovers.co.uk/produ...oof-smockparka
I also use the Aktis made waterproof trousers: http://www.countrycovers.co.uk/produ...kland-trousers
I do not get sweaty shooting FT in this gear up to temperatures around 20 Celsius, does not restrict movement. The trousers are easy to get on and worn over some jeans. Great quality, very durable, breathable and does not lose waterproofing.
You may also find used and new Arktis smocks on ebay but usually only in military camo colors. Make sure you buy the waterproof version (if you need that). Easy to recognize because they have a black inner liner. The same model coat is also made without waterproof liner and somewhat cheaper.