All guests other than beginners/occasionals/children usually wear breathables, other than in spring. Make tends to be according to pocket depth with Simms and Patagonia often chosen by the well-healed. Scierra and Greys are frequently seen on those less willing to spend big, either for sake of cost or because they go through waders so fast that expensive ones are a waste of good money. Vision and Guideline are often seen by me, too, and possibly the most common make I see on my fellow gillies.
I've used Vision Ikon Zipped for about seven 6-month seasons now. A pair tends to last me about 8 months of usage, six days a week. They eventually fail where they rub around the knees or accrue so much Aquasure on pin-***** holes that I'm embarrassed to carry on wearing them (gorse/brambles/barbed wire/etc.). The early model had issues with the zip teeth loosening but that's long sorted now. No issues with my last three pairs. They come in a multiplicity of sizes so getting a good fit is feasible but also important - baggy legs wear quicker!
The great asset is the zip. Not having to remove a wading jacket and hood when watering the garden in a downpour is a big bonus. You can keep a life jacket on, too.
I once rowed a mildly drunk guest to the shore so that he could take a much needed leak. He hastily threw down the (compulsory) auto-life jacket and wading jacket, hauled down his chesties and proceeded to relieve himself.
The yellow spate ran downhill of course and met the discarded automatic life jacket right at the vital spot. BANG! At this point it was me pissing myself, not him. As I mentioned, jackets were compulsory so I gave him the option to wear it or walk back to the car around the loch. He elected to wear it. Wouldn't have happened with Ikon Zipped!
