As the day Segwit2X will hard fork from currency bitcoin chain approaches, mining pools are starting to clear their position on the issue. Bitcoin.com pool issued a statement on the matter, stating that whoever mines BTC on their pool at the moment, will automatically mine on the new S2X chain after the fork.
The pool operators underline that given that Segwit2X was agreed by over 85% of global hashrate, at the moment it is unlikely that the legacy chain (called "Segwit1X chain") will survive after the hard fork, schedule to occur at block height 494,784, around November 16.
Nevertheless, they also say that if the current chain does survive the fork, then they will offer miners the choice to mine on it.
The pool's statement appears on logged in miners and says:
Segwit2X Hard Fork
If you are mining BTC now, you will automatically mine the Segwit2X chain after the hard fork. We will not initially support the Segwit1X chain after the hardfork. This is because over 85% of the global hashrate has agreed to mine Segwit2X, so it is unlikely that the Segwit1X chain will survive. If the Segwit1X chain survives the hard fork, we plan to give you the choice to mine it.
https://console.pool.bitcoin.com