I think we probably caused some confusion by referring to the Shubb G7 capo, I'm not certain that that is what it is actually called. The G7 capo is something else entirely that 'looks like a bottle opener designed by Porsche' as Richard Thompson put it. It will do the 'quick' drop D trick (actually 'E') by covering strings 1-5 at the 2nd fret but not the DADGAD trick.

The Shubb is just a shorter version of their standard capo designed to cover just 3 strings, Kyser also make something similar called (I think) the 'Short-Cut'.

Tony B