In reply to zimpara:
Another bonus is that you can do Hope, Lazarus and The Arete in the morning then Avalanche/Red Wall/Longlands in the afternoon while on an over-enthusiastic Classic Rock ticking mission even if you are crap like me
Downside is you might die :P
When we did this, we (or at least I) tended to put a fair amount of gear in - since we wanted alt lead ticks on every route that sometimes meant doing it for just a single pitch, belaying and swapping over for the second pitch. You can still save time since you save some belay faff. We also found closer to 15-20m of rope rather than 10m meant we always had a bit more gear on the rope - I guess you ideally want at least 3 pieces, and sometimes even 'easy' routes can be surprisingly run-out for 5-10m or so. Also, large ledges are inconvenient and can be unsettling for the leader as they walk very slowly across them hoping the second doesn't fall off before they get to the back wall and hopefully gear... this is where a microtraxion etc, placed on the last piece of gear, might be useful. We also did a lot of belaying past trickier (albeit still easy) bits. Even if the leader has just managed it OK, it is worse if the second falls off, so makes sense to protect them a bit more.
In terms of coiling the rope imparting twists: yes it does. But this doesn't cause problems as long as you remove each coil individually rather than taking the whole coil off your shoulders and throwing it on the floor.
I don't solo (or at least I don't set out to solo, with many exceptions like 'doesn't count as a solo if I'm trying to protect it' and 'doesn't count as a solo if it has a scrambling grade'), but I think I would be fairly happy soloing all the stuff I have moved together on.
Post edited at 13:24