I found a Neverfull GM in the Monogram print at one of my local stores today. This morning I used the "Find in store" feature on the Mexico website, and it showed stock at one of the locations. I thought it might be a "Display Only" bag - which was on the shelf when I arrived - but the SA pulled it straight from the drawer for another client to try on. That client turned it down...and "casually" (tried my best to contain my excitement) let the SA know I was interested. Tried it on, gave it a good once over, and bought it.
If you have the time and live near a store that has lower foot traffic, it might be worth it to pop in and just ask. If it's in the drawers, they'll probably sell it to you. Or, maybe I just got lucky - they mentioned they hadn't quite gotten their waitlist system up and running yet, and they were trying to move the last of the in-store inventory (I saw a few PMs and MMs also). Meanwhile at the larger boutique 30 minutes away, the waitlist was already up and running (I stopped by earlier in the week to ask, and they said "No stock. 2-3 month waiting list.")