I don't bother with a stove for summer, I'm not exactly a culinary genius anyway, and it's so much easier to just eat stuff. There is a trade off though, because your food is heavier.
I don't use soap or shampoo at all. Hills or no hills. Took me 25 years to figure out the solution to my dry/horrible skin/dandruff was to stop looking for a solution. Unless you get covered in grease daily, you can wash just fine with water and something to scrub your skin. I still use deodorant, I tried but I can't get away without it. Toothbrush is fine without toothpaste.
My Summer skin out weight for a weekend, including everything except my shoes is about 10kg. that's 2 days of food at an over guesstimate of 2.5kg, 1.5l of water, 1.4kg of camera and including all the little stuff like phone, maps, wallet, key, socks, undies, toiletries, watch, and an overkill knife(78g). I don't like listing base weights, the best way is to fill your sack with everything you take, and stick it on the bathroom scales, any other method is just fooling yourself. Base weight for an overnight is different to a weekend, or 2 week, or 6 month trip.
Currently using a kata DH423. I can't comment on long term durability, but it's very well made. The 2 belt loops on the back are both thick 35mm wide nylon webbing with no slack, they grip tight to whatever you put through them. For your wear pattern it would wear the bag material long before the loops, the nylon runs inside up to the top of the bag. I usually hang it from the D loops in a similar setup to the picture JonC posted.
I'm in a fairly similar place winter gear wise, I prefer to have a roll up foam mat (150g) in addition to an inflatable. Handy tip: for cooking, especially mid day, sit down and put your foam mat on edge around you and your stove, makes a nice big windshield
I carry a lot more insulation clothing and a lighter sleeping bag though. PHD yukon and minimus trousers. Those combined with a neutrino 400 in a bivvy and I'm toasty, makes getting out of the bag easy too
I have a lot of things set up so that I can use them in summer and then combine with something else for winter.
I'm actually getting heavier though, 1.4kg of camera gear at the last weigh in, but when everything else is so light it's fine.
I've got my summer gear for a weekend down to fitting in a 20l pack, with just shelter(hammock+tarp or Trailstar+bivvy) on the outside and chest mounted camera bag. But it's untested. Soon
I've tried using an ABC watch (casio prw 2000) as primary compass a few times and it's never worked out well, I go back to a proper compass very quickly. I also found that a Suunto Clipper Mini on a rucksack strap was far easier to use for rough bearings while on the move than the watch (no buttons to press or waiting, point is pretty steady). Backup only.
I love the altimeter, It constantly surprises me in its accuracy. Updating it twice a day is enough to keep it within 10m all day. Used for navigation all the time. I've not really used the Barometer, weather forecast on the phone for that.
I find temperature sensors/thermometers pointless. How cold or hot you are depends on so much other stuff that the number is meaningless unless you like keeping records. I think I used it once when I read the manual.
The nice thing with some of the Casio ABC watches is that they're solar, and show how much charge they have, no worrying about batteries for a few years.
So, really, I should just go and replace the watch with an altimeter. But then I'd have nothing to tell the time with
3leon
