Sorta silly to ask that here... you should call or at least email him directly. Although plenty of people here have had work done by him, custom work always varies...
FWIW, mine took a little over a week from shipment to receipt.
I lived 20 min away from Dan and I never had him work on my M&P 45 or 9 before I moved to MA. I regret that decision. From what I have seen/heard, it doesn't matter how long the wait is because it is worth it.