The config button (and paddle) will be able to trigger scenes from the Blue Series but not the Red (the same scenes as if you’re clicking the Blue directly, not additional scenes). Like Eric mentioned above, the Red series isn’t able to detect the multi-taps.
Regarding dumb switches, are you asking about an auxiliary switch with a dumb switch? These don’t have any smarts built into them so I don’t think there would be a reason to go with that setup. If you’re asking about a 4 way where you have a Blue Series, an Auxiliary Switch, and a Dumb Switch all together, that I’m not sure on offhand but my gut would lean towards that being problematic. The reason there being that the firmware allows you to set whether the switch is being used with Aux or Dumb switches, and not sure that a hybrid would work. Looks to be one or the other based on the wiring schematics. You’ll also note in those schematics that the Aux switch itself doesn’t actually get wired up to the load, so that’s why you’re not going to get that kind of information on the product page either.