I'll be amazed if this fork happens. People don't bet tens of billions of value on something put together by a handful of nobodies behind closed doors forcing a fundamental change in a few weeks that no one outside the room it was created in agrees with.
No one?
In this forum, at least, there was a poll with a majority approving Segwit + 2MB. You now can say that there was low participation in my poll, but I have really discussed this topic many times at BCT and there are many people here approving a conservative block size increase.
The aspect of the agreement I personally object is timing. November (or any date in 2017) is, in my opinion, too early for a hard fork. So I had a slight (delusional) hope that there could be an agreement to postpone the 2MB part to mid-to-end 2018, with the approval of at least some of the Core developers. But it seems that won't become true.
The NYA was not only signed by miners, but also by "big fishes" of the "economy" like BitPay and Coinbase, and there seem to be only a few companies completely opposing the 2x part (see
support). If these big companies keep supporting it then I think the Segwit2x chain will be the stronger one.