I've been looking to get the same sort if thing for my car as well.
Some of the door sill protectors I've been looking at do not cover the whole door sill. They only protect part of it, especially the stainless ones which are bought more for looks than practicality.
I intend to get some heavy duty clear vinyl and cut some to fit the door sills completely, if they get scratched they can easily be replaced.
As for the bumper sill protector, there is plenty of good choices, I'll be getting a black vinyl type which is practical and will look good against my dark silver paintwork.