Arrived for me too. I was a little skeptic about the black x-pac as well, but so far so good. I really enjoy the contrast with the buckle hardware and the pure darkness of the black x-pac. I've also always wanted 3a2 in x-pac, the perfect combo imo.
The strap itself feels cheaper than my laminate 3a2, but same length and measurements overall it seems. I've always liked how long this shoulder strap is compared to other 3a models.
I personally love the smaller interior pocket, yes it doesn't hold our giant cellphones, but i think that's what this bag itself is kinda for (or i always personally use the back mesh pocket). The interior pocket which measures 5.5" deep however works excellently for pens, airpods, various cards (card holder if you use one), cash or coins, trinkets and totems, it even stores my glasses perfectly and well protected. And as for the main compartment, I'm always taken back but just how much it can store. I could literally come up with 100 examples of carrying capacity. I just walked to my friend's place with my switch, two extra joycons, aoku 160616 mod (fully loaded), glasses, keys and wallet. Hopefully decent enough example, and no shoulder pain!
Great bag, can't wait to see how this new x-pac ages.