I got a custom made AA sack once. Many years ago and it cost me something like £90. It was based on a cross between two day packs but with an extended back to fit my back length (I am 196cm tall so it is a very long pack indeed). There will not be many like mine around. Nice and simple alpine style climbing pack but anywhere from 55 to 65 litres in capacity up from the 30 to 35 litre capacity of the sacks it was loosely based on.
My view of AA packs is they are so unashamedly old school in an unfashionable way to the sacks back then where brands added too much onto them. They made simple and light alpine / climbing sacks when other brands were putting the rucksack equivalent to IT bloatware onto their bags. They made them out of not the lightest of fabrics but the best and toughest depending on where on the sack it was going. They were a mix of durable and light due to the basic design. One chamber sacks. Simple but cavernous top pocket and side straps. Hip fins that worked with a strap belt to really support the sack weight. Nothing that was not needed. Including one alloy stave, pre-bent but still you were able to bend it to fit your own back.
I rarely use that sack these days but when I do it really works. It will likely see me out and all at 1.1kg total weight!! For a sack that could carry a decent high 20kg plus load I think that is a lightweight sack. That was due to heaavyweight and durable fabric in high wear areas and a lighter weight in the otheer areas. I got to choose my own fabrics for the sack, with guidance from the owner of the company. Who is a very knowledgable guy, friendly and helpful. He gave the guy who founded Atom sacks a lot of guidance and help in setting up and learning about making rucksacks. For a potential competitor to owe his existence to the training given by this guy and his team says a lot about the guy IMHO.
So I say enjoy that rucksack and appreciate the company it came from for all the decades of use it will give you. Just remember when you are no longer going to get any use out of it, pass it on to the next person. It will last that long I have no doubt!!
Do I come across as a fan of the company? Was it a bit too much??