I remember back when I was playing a Shadow Chaser, the general rule of thumb if going for a Shadow Spell build was to job change at job level 40-42 so that you don't need to put points into Double Attack as it doesn't proc Shadow Spell. Given that the new Abyss Chaser spells function very similarly, I can't help but wonder if they also can't proc from Double Attack, namely Abyss Square since this is a primary source of damage.
The main difference worth noting is the use of the term "Basic" compared to "Normal" when referring to the attacks that can proc each spell. Is this just a wording choice or does it actually change the formula?