In my opinion I think I'll sell B2X to buy more Bitcoin cause everyone can easily know that the coins created from hardfork, BCH and BTG, often have good price right at the beginning but after that its price dumped very quickly so I think this time will be the same that B2X will only have good price at the start then it'll be dumped so I'll sell it right after I got it from the hardfork then buy some more amount of Bitcoin 
)
)I also think that way, but i'm very concerned about the lack of replay protection. I fear that when I try to sell my B2X I end up losing my BTC.
I think that if B2X fails in replacing BTC, and that's what I hope to happen, the SegWit2X team will have to implement replay protection for B2X to coexist with BTC as an altcoin, because they wouldn't want their coin to die.