One Guitarist, One Drummer

["Rainer Straschill" <moinsound@googlemail.com>]

Rick asked:
"What other single guitar/drum groups are out there, per chance?"

Ruins (well, not exactly, it's bass guitar).
You could also count in the drum machine/bass guitar combo of
Squarepusher in some of his live shows.
On the other hand, this exists also as a "double duo" - on the "Sign
of Four" album of Metheny, Bailey, Bendian and Wertico.