In reply to RR:
Good point about the weight, but I do try to shave grams off wherever I can, for that reason. Also going through an unfortunate phase in my climbing where I don't want to be on a wall at all without every bit of gear I could conceivably use, which really isn't helping.
In theory I'm using either:
a) 2 x 8mm half-rope, one on the Silent Partner, one clove hitched to a screwgate on the harness. Stop every two metres and pull more slack through clove hitch; or
b) a 10.5mm single rope going up through the SP, looping back down again for a couple of metres then coming back up to a clove hitch by the harness.
In practice I'd be lying if I said I'd never used an 8mm half rope on its own, or that I always bothered with the backup clove hitch, particularly on short/easy routes.
Thanks very much for the advice.
Post edited at 10:01