cool new DAA chords

I stumbled across some cool new DAA chords the other day

start by playing D 7-5-7 then slide the bass string up to 8-5-7 - technically this is E over D (E/D) as the now missing D is implied

similarly play A 4-2-4 then slide the bas string up to 5-2-4 - similarly this is B/A

aren't they lovely !