In reply to treforsouthwell:
Thank you very much for the advice, treforsouthwell - certainly seems to be a popular opinion in the thread. I appreciate the wisdom.
The kind of places most of my climbing happens tends to be 'chockier', unnamed routes on European mountains, rather than decent British crags I'm afraid. The question of 'what is the lightest option available' tends to come up w.r.t. everything from stoves to first aid kits when the approach is measured in days... This is why I keep prattling on about rack weight in various threads lol
You've got an excellent point about the cams and hexes - I can see you know what you're talking about. Turned out that DMM torque nuts on Dyneema turned out to be the only acceptable solution if you're interested. The community here has also been kind enough to guide me towards the Grivel Plume K3N and Edelrid 19G - the world's lightest locking and non-locking/quickdraw carabiners, respectively.
Thank you again to you and to everyone who chipped in with advice - I really appreciate your time.