I'm relatively new to tenor guitar, and prefer to finger pick melodies with occasional grace notes and drones rather than strum. Hence i usually tune CGcg because of the regularity of the note spacing in the first five frets.
However, i've been thinking about tunings that are based on the 6 string. I know that so-called Chicago tuning (DGBE) is popular because it matches the first four strings of standard tuning on a regular guitar. However, it seems to me that matching the middle four strings (ADGB, or at least their relative spacing, such as GCFA or DGCE) would be more natural for a guitarist to play on a tenor. Essentially, you form the chords in the usual six string shapes, and ignore fingers that "fall off" ONE string on either side of the fretboard rather than TWO strings on the bass side. At least it feels more natural to me.
Is this a common tenor tuning? What are the downsides? Thanks for your insights.
ron