User482 said:The mudlover cable has a thin plastic sheath that fits snugly over the inner wire and runs through the full length of the outer. It terminates just before the rear mech anchor point so that the cable can travel back & forth to move the mech.
Thats what I thought. Whilst I can see this type of cable preventing crud ingress where a standard cable changes from open to enclosed, I'm not sure that provides much benefit in practice as in my experience the only area where crud is a problem is the rear cable loop.
I'm not sure that a close fitting inner sheath would do any better at keeping out crud at the rear mech end than than the rubber boots etc used on standard cables, so I'm not tempted to splash out £35 or so to find out. At some point though, I'll probably give the new XT shadow mech a try and see if the improved cable routing make a difference.