Alright, Norb & Dag look pretty fun! I like there are (apparently) differences between the two (Dag's faster and more combo-focused, while Norb's more range and power-focused), and I like how the switching mechanic was implemented, particularly how you can swap during their respective Neutral and Side Specials and not just with their Down Special; that'll be fun to play around with. Also, I'll definitely have to play around with their other moves considering the showcase was kind of swallowed up by their Specials.
One thing I'll say is that it does feel a tad odd that the two only have one Special Move completely unique to them that involves that Beaver doing something, namely the Up Special; both the Neutral and Side Specials involve summoning the other Beaver for a unique attack, and the Down is what I'm guessing is the move that does the swap, so that just leaves the Up Special as the only one that Dag and Norb have to themselves without involving the other. It's not a huge deal, just an odd observation.
Also, this is something I've kind of been wondering since Norb & Dag's reveal, and this didn't really help much, but in-game, are they going to be referred to as Norb & Dag (or some variant) by the announcer? Or are they going to be referred to collectively as "Angry Beavers"? I wonder because both the reveal and showcase titles have collectively referred to them as such, and that would be kind of weird if they did.
Also also, I wonder if there'll be a similar thing to Smash where you can choose which Beaver you want to start with on the character selection screen.
All in all, though, the Beavers look like they'll be fun to play around with, particularly the plays with the swapping mechanic, and I'm looking forward to seeing what the rest of their respective movesets look like!