In reply to sianabanana:
> (In reply to GrahamD)
>
> So i currently have a 60m single rope - could i get a half to go with it?
Sure. If you don't mind the weight, why not? I've used this combination myself. Seems like you even have a bit more flexibility in terms of what you can do. When the time comes, you may decide to replace the 60m single rope with another Joker (or other half rope). For now, save some $$
Disadvantages:
Extra weight
Should NOT be used as twins (both clipped in each piece)
Advantages:
Can be used are half/doubles
Can be used as single with a tag line
Longer abseils
Can bring up two seconds at the same time
Use your single rope for toproping
If your second is stuck she can prusick up the single and you can belay her on the half rope.
Probably some others I can't think of right now...