Just to let folks know how versatile these things are, and how these can be used for the rockier end of music as well as the acoustic end.
You can partial capo with them, using the fact that they are open ended to cover only five or even four strings.
In standard tuning try clipping the thing upside down at the 2nd fret, across all the strings except the bottom E. You then have the equivalent of dropped D only in the key of E.
Using it the other way round, clipped over the top, across all the strings except the top E at the fifth fret to give two uniso ringing Es.
I use mine in open G tuning, across all the strings except the top one at the thrid fret, to give a ringing open string for slide. Then try across four strings leaving the top two open, but at the fourth fret, very strange tonality.
Im sure there are a whole lot of other ways of partially capoing with these things, but I thought I'd share the dropped E/D one wth some of you on this site.
Sollophonic