Don't know about your carbide dies, but mine only have a carbide ring at the bottom of the die, not full length. This means as you run a bottle neck cartridge into it, you would still have to lube the shoulder/neck junction. I'm sure any of the die manufacturers would love to be the first on the market with a cost efficient carbide die for bottle necks, key here being cost efficient. Carbides not cheap, nor is it easy to machine, infact I think they have to grind it not machine it. I could be wrong here.
The price would be in the hundreds easy, I'll stick with my Hornady spray on lube, not that dificult or messy.
Gary