Usually it's only possible to have either the stock manufacturer ROM running on a device or an AOSP (stock Android) one, but there are often times when someone loves something about each but has to decide which ROM to stick to. But that changed, at least on the HTC One, with MoDaCo switch, which lets users have both a Sense ROM and stock Android ROM on the phone at the same time, allowing them to switch between the two with a reboot, and also lets the two ROMs share data so that something you may install on one will show up on the other.
Well, after starting a fundraising campaign and meeting their goals, the developers of MoDaCo Switch will be bringing the awesome tool to the Galaxy S4 (Snapdragon variant, GT-I9505)! Which means that you will be able to have both TouchWiz and stock Android ROM from the Google Play Galaxy S4 Edition on your phone and just switch between the two with a reboot, with as much data shared between the two ROMs as possible. Want the unadulterated Android experience as Google envisions it? No problem. Want to use one of Samsung's many value-added features? Well, with a reboot those will be accessible to you as well, with the same apps and their data available on either ROM.
There's no launch date set for MoDaCo Switch for the Galaxy S4, but beta access will be given to backers of the project in August. There's 17 more days to go before the fundraiser campaign ends, so if you want to see this happen, be sure to hit the source link and donate a few bucks towards the cause!