"What difficulty?" (Ed asks about my reference to thumb-under technique). Perhaps my understanding of this technique is incorrect. But, I think of it as implying the use of p-i for running lines whenever possible.
I think of thumb-over as allowing use of m-i whenever desired. So, I think of the person useing thumb over technique as using m-i more than the person using thumb under - at least whenever bass notes are present along with treble ones. So, for example, if a section in 4/4 has 16th notes in the treble throughtout a measure with quarter-note bass notes (see the 5th from the last measure of Dowland's "A Fancy" - number 5 in Poulton's edition) I would approach that (using thumb under) by playing the last three 16th notes of each group of four with i-p-i. My assumption - perhaps not correct - is that the thumb-over player would most likely play those 16th notes i-m-i, keeping the thumb in the bass area ready to play the bass notes. This seems "easier" to me, in that the danger of missing - or not striking cleanly - a bass note is lessened. Ned -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
