How do you high string a guitar?

The Classical guitarists Paul Galbraith and Alexander Vynograd are two of the most notable 8 string players who use the extra high and low string tuning. Galbraith generally tunes (B)EADGBEA which puts standard 6 string guitar chord voicings and scale shapes within the neck and allows him to read directly off of lute tablature (a whole step higher). Vynograd chooses to tune AEADGCEA (notice the b string is tuned up a half step) which allows him to play the top 6 strings like a guitar a 4th higher. Vynograd writes his music on a grand staff in a different key and plays as if the guitar was tuned EBEADGBE. This is a less confusing approach than Galbraith for a 6 string transitioning to 8 because the fingerings and sheet music are more familiar.