Hi Dick, congrats on completing the C2C! You were really lucky with the weather. Contrast that with my Pennine Way walk, which I commenced on 5th September this year and finished 13 days later at the end in Kirk Yetholme. Wow, was it wet at times! Although there are now stone flags on many of the worst boggy areas, like Black Hill, nevertheless there are still vast areas of bog to go through. Personally, I think the 2 biggest problems encountered on a 2-week LDW are a) the need to carry equipment, particularly clothing, to serve every eventuality the weather can throw at you in the UK. Long range forecasts (i.e. beyond a week) are in my experience not accurate enough to rely on insofar as kit selection is concerned and, like you, I might take waterproofs, but never wear them, but you can bet that if they were left at home, the second week would see downpours! The second point, b) is selection of footwear. I still don't think there is a single solution to this in the UK due to our contrasting weather conditions no matter what time of year.
I've recently acquired a pair or Meindl Response GTX mid-boots, which I am getting on with really well. I wish I had them on the Pennine Way, maybe with a pair of waterproof socks too, as the bogs are pretty deep in places! But I also think a second type of footwear is required, despite the weight penalty. I wondered what your thoughts might be, and hopefully that of other members, if they read this? Let me explain..
I'm not a huge fan of "boil in the bag boots" (GTX membrane), but that said, I don't seem to sweat too much in these at my stage in life. Maybe older folks can tolerate them better than younger hikers. My feet used to sweat more when I was younger, but not so much now. Boots give some people reassurance about ankle bracing, but I've always thought it's accurate foot placement that is more important to avoid ankle injury. Also avoidance of tired legs, especially when going downhill. Light shoes on the feet give me stronger legs for longer and I am "nimble" on my feet. That said, the Meindl Response are only 890g and are pretty good, especially when conditions are wet, but not shin-deep bog. Up to about 3" seems ok. Any more than this and the water goes over the top of the boot. Even with a waterproof sock, it's no fun walking after that. In those cases, it's better to have a fully ventilated trail runner in my opinion, with wet feet during the walking day, which are then dried and oiled at night.
I used to take camp "flip-flops", but not now. They might be light, but they are of limited use. Instead I'll take some very lightweight (350g or so) trail runners for wearing around camp. I can wear a waterproof sock in these and keep my feet warm, dry and insulated when walking around camp. Also, if the conditions are favourable, I would wear these to hike in during the day and carry my boots on the outside of the pack. If I'm expecting wet, but not really boggy conditions, I'd probably take my Inov-8 Roclite 315s to walk in during the day and use the really light trail runners around camp in the evening. If really wet, boggy and cold conditions are anticipated (Pennine Way!), I'd probably swap out the Inov-8s for the Meindl Response boots.
I just don't think there is one boot or shoe that does it all for LDW & wildcamping. I've tried quite a few combinations now over a lot of LDWs and the closest I have come to a single ideal footwear solution is a trail runner that was fully ventilated and dried quickly, but there were still limitations. I'm of a mind now that two pairs of footwear are the best solution that I have found, but there is a weight penalty. The penalty has, however, reduced with modern very light-weight performance materials. Volume is still an issue, but the footwear can probably be carried external to the pack for most of the time. I still reckon I can keep to 15lb in Summer, 20lb in shoulder seasons and 25lb in Winter.
I'd be pleased to hear your own thoughts and hopefully the thoughts of some of the other members about what works for them.