They’re fairly indestructible but you’ll struggle to get them in a small rucksack as they’re bulky and they’re just not breathable enough to wear all the time.
I’ve heard of people taking the trousers and converting to shorts. That sounds like a good plan that I might try.
Basically, in my experience they are great for standing about in but not good for sweating in.
BTW – the hoodless mtp pattern jacket with the arm pockets has ridiculously short arms! And if you’re going for a hooded one with chest pockets then bear in mind they’re designed to go over army kit, so order smaller but longer than you’d think if you want a tightish fit that will still cover your wrists.