Now keep in mind this is coming from a Proto junkie, but the suggestion that Proto gets Mac's previous gen stuff once Mac is done with it is just not true. Experience tells me Mac gets about a 6 month head start on shared products.
There are lots of products geared toward the automotive market that Proto doesn't offer, likewise there are lots of industrial geared Proto products Mac doesn't offer.
Proto is a big name, top tier, industrial market king. I'd bet the farm Proto pulls in more more money for SBD than Mac does. Between the military, government, and damn near every industrial outfit in America, Proto is the bread and butter of the SBD hand tool lines, make no mistake about it. That's a lot of the reason why Mac was seemingly kicked to the back burner for the last several years. There is a new focus coming on Mac, but it isn't coming at Proto's expense. Rest assured of that.