I don't see how that would be any/much different than the FA snap caps. I have FA snap caps in a number of different calibers, but to be honest, I've almost never used them. I guess I bought them "just to have them", for whatever sense that makes.
Paul, I guess we ought to call or e-mail Bob to ask what they mean by "limited", and seek a further explanation. Looks to me like they ought to be good for hundreds or even thousands of snaps, but not hundreds of thousands. But I ain't the Warranty guy.