Double bitcoins? I thought all the bitcoins will remain and the transition (in case it really happens) of BitcoinCore to BitcoinXT just adds the bigger blocksize limit and functionality but the bitcoins will remain? Confused here.
Obviously nobody doubles Bitcoins out of thin air. Bitcoin Core and XT are the same, network and blockchain-wise, as of now.
I installed it two days ago to check it out... I uninstalled it last night and now I am back with core. It was misleading, because the github page said you could easily switch between XT or core, but it runs on top of core. So once you install XT, even if you try to launch core you run XT everytime. The only way to run core again is uninstalling bitcoin and reinstalling core.
Yes, that's how it works, you wither have Core or XT... But their files are compatible between each other. Example: you don't need to resync to start using XT