That happened with BTG for me. At first I didn't bother even to look but it turns out that as soon as Btg was listed on Bittrex I automatically got the equivalent amount. It was even a week later that I made some effort to split whatever btc I had in a software wallet. I am confused as to how hard it will be the split of B2X in a software wallet this time (compared to BCH for example) but I assume that everyone that's not in a hurry to get it and dump it, will eventually find an easier way. After a while guides and tips pop up all over the Internet, so I'll play it safe and wait. The only thing that bothers me is the replay protection, but I'll hope for some tested and thorough guides since I don't have sufficient knowledge myself.