For about a month now, HTC One owners have been able to enjoy MoDaCo's efforts to mix up the Android experience on the Taiwanese company's handset. But, hey, don't go thinking anyone forgot about Samsung's own flagship device, the Galaxy S 4. Available now to those who backed the campaign on Indiegogo, MoDaCo.Switch is giving the GS4 crowd a ROM to sense what it's like to seamlessly switch between the TouchWiz and AOSP versions of Android OS. It's worth noting that this particular ROM is only compatible with GSM models of the Galaxy S 4, and, as ever, creator Paul O'Brien notes it is a beta after all, so some issues may arise. In other words, backers must install at their own risk -- capiche?