I use a Jim Dunlop capo at the second fret of my Fylde Falstaff twelve-string and tune to dropped-D from there. The Dunlop capo stays there most of the time. I park a Shubb twelve-string capo at the first fret. Using the Shubb anywhere up to seventh fret while leaving the Dunlop in place doesn't usually require any re-tuning, intonation stays good, only after that would I have to adjust the bass E-string, but I rarely capo so high up the neck.

Why two makes of capo? Just historical. The Dunlop was the best of its time, and when the Shubb came along its simplicity of operation and the reduced need for re-tuning justified the extra expense - but not enough for two for the same instrument!

Ross