I won't be surprised if the price falls post fork on November 16th. Segwit 2X is supported by some big communities and big companies like coinbase. Which already increased the acceptability of 2X among the market. That is probably the reason why more people are buying bitcoin to get free 2X at 1:1 ration. After the chain splits, a lot of people probably going to dump big amounts of bitcoins and 2X as well. So we can expect a price dip after fork. But I am also sure that the price dip will not be significant. Because we have started receiving some great news from big corporate like CME group and Iran government. It's time to become serious about bitcoin.