I came across this today on the Muhle Facebook site and thought it was a great idea that is long overdue: http://www.muehle-shaving.com/shop/traditional/zubehoer/1/klingenschutz/147/283/KSR?lang=en This is a great idea for traveling or storing razors.
I would imagine it would fit quite a few three-piece razors. At a minimum, it should fit Edwin Jagger Three-piece razors as they share the same cap and base plate. I will have to order some once they are available, try them on the razors I have and report back here.