On mine, the left/right ear is marked on the metal weight - did yours not come that way?
Agree with your comments on the sound and can really notice the difference on some tracks. I don't find the metal weight an issue - maybe it depends on use / height - but it does work in stopping the wires...
I signed up towards the end and don't have mine yet either although I am still getting the emails. They are shipping regularly so I'm sure they won't be long.
So, if I've read this correctly if 10 people on here got together and pledged £60 each you could get one of the £600 Early Distribution packages which would give each person a pair of the headphones for their £60 - much better value than going in individually.