Those MPs are heavy, Jake!Spoke with someone who had a chance to briefly hold one a week or so ago. Their single comment was that they were surprised at how heavy it was compared to other mirrorless bodies. For anyone coming off of a DSLR that might not be a big deal, but it's 12oz. heavier than the R3, which I know has half the MPs, but it's the only other ergonomically similar mirrorless body which is why I bring it up, and the A1 with a grip is about the same as the R3.
Seriously, the Z9 is an interesting offer from Nikon, since early on, one of the biggest benefits of mirrorless cameras was that they weren't as heavy as DSLRs. Now, we have the Z9 with its larger, heavier form factor flying into the face of improved human factors engineering.