i posted this in kakashis thread, hope it helps

"from my relatively nub perspective, i bought a clean pair and compared them to clean tact bow in km3 and rengol maps. there was no noticeable advantage to the daggers in terms of pots used or time taken, and the proc was rare. like, really rare. i felt the 2m mythic bow exceeded the 4.5m arcane daggers (which i sold after testing).

although it's possible they'll get buffed, i don't wanna count on it. i do think it's unfair to change stats once items have been looted and traded. but maybe adjusting the proc (incl frequency) could be a way forward. "