Any question answered...

Don't use clamp on cable stops for brakes, one little slip under load and you suddenly have no brakes. Make sure you are using high quality lined cables, and keep the curve radii large and you shouldn't notice the full enclosure.

I thought i might be able to get some that would clamp to the the head tube and the seat tube and not then be able to move, but i can't find anything on the sjs website so it seems unlikely anywhere else will do them! Cheers for the info.