In the past, I've run xtr cable sets with tongue and rubber seal set up. It worked just fine.II've also tried middleburn cable oilers. They're not bad but I'm sure less than half of what I squirt gets into the cable housing.
The wife's bike shifts better for longer and runs full length housing on the rear. Now, it could be that it doesn't get ridden as often but I'm fairly convinced it's the way to go.
I'm now happy to dremmel out the cable stops on my frame and run continuous housing but my only concern is that as the suspension does its thing, the housing will migrate.
Here's my potentially cunning idea!
If I cut the end off the old ferrule and slide it over the housing, into the cable stop, then drill and tap a small hole in the side of the cable stop, I could fit a small bolt or grub screwto hold everything in place.
I know it sounds like a faff, but I like faffing with my bikes. Any reason why it wouldn't work?