Yeah I have been using that tactic for awhile now.Do you hit-confirm 44B,A,A in combos? When two last hits whiff, Aeon can be punished badly so it's important to know when the combo whiffs and when it doesn't. What I've come up with is performing 44B,A and adding the second A when Aeon turns properly after 44B.
After 1B BE, if you use 1B+K (Unblockable roll), it will have a 100% chance of connecting if the opponent does not ukemi. They won't be able to stand up fast enough to jump it, and if they roll to the sides, you'll roll over them. The only exception I found is Voldo, who seems to back roll just far enough to escape it. (There may be other exceptions, I haven't tested thoroughly.)