Adding a non-QT achilles is just playing with fire. I've seen 3 local guys wiping out nearly their entire livestock from doing so.
There's an occasional few that will get away with it. Your tank, your fish, your call.
Its important to start off with a good specimen, an achilles that is eating well. If you receive an achilles thats
already refused food for several days at the LFS or dealer, then you might be doomed from the get-go.
DD will make sure to send you a well eating achilles. If it dies within 14 days, they will guarantee it. So its of their best interest
to send you a quality specimen.