I'm unimpressed (but then I'm no distorted bass sound fan at all, isn't distortion something guitarists have to do because their puny little instrument lacks any inherent authority?
). I fail to see the sonic appeal of all these duos that sacrifice an instrument, be it Jack White/White Stripes or these guys. To me it will forever sound empty and rough. Besides, the point of bass and guitar interplay is not that the bass covers everything the guitar does one octave lower - how inane is that? The appeal is that the bass sometimes plays less and sometimes more than the guitar.
I'm playing at a wedding ceremony in church on bass with just a girl singer on Saturday and the rehearsals went fine, but it's nothing I would want to do on a rock stage. Essentially, I play "classical guitar on (an alternately tuned) bass" which suits the occasion, but it's hardly a band experience, I bas(s)ically mimic with chording, empty "drone" strings, arpeggios and harmonics what a guitarist might do. And drop in the low E once in a while to remind people that they are listening to a bass.
The above guys here remind me of
Clatter, btw, the "Ric+Chick+Drum Punk"-Duo Steve Barr championed so energetically in the Götterdämmerung daze of the Dudepit, threads were awash with them for a while. They apparently still exist too:
http://www.clatter.com/Their stuff has a lot more charm than Royal Blood's "riffage pretending to be songs" IMHO though. And I sure bet Amy of Clatter never heard much Primus or Les Claypool, no, not at all ...