It's a proper fork, not some weird kludge without replay protection. I doubt many people will pay much attention to it so there won't be a price effect. It's created by people with no major backing or agenda.
My only concern that if even if bitcoin price go little bit down, Almost all Altcoin will go down about 30% to 50% dip. That will create panic for at least couple of weeks before it settle down. and Many people do not know about it and will sell in loss.
No I doubt that the looming fork in November has direct impact to the price of alt coin. I don't know how you come up with that idea. And if ever there is an impact, it will be temporary. I think we have seen what happened in Aug. Actually the opposite happens, bitcoin did not slump but moved past $3000 on Aug. I also think that the fork will not occur. It didn't gain any traction as far as am concern. So where is the demand if there are no support from the community?
may be the effect of panic selling, you know yourself traders if you hear any news immediately panic and sell their bitcoin.