I've been testing out UniBeast and MultiBeast over the past few days and love these tools...I was able to install Sierra on my custom build PC and get it working within a few hours! I did notice something strange when using the USB installer created by UniBeast, though. I've been using Macs for a while and am pretty familiar with the official installation process, and I noticed that the USB installer created by UniBeast skips the initial welcome screen...
UniBeast Bypassing Welcome Screen
UniBeast Bypassing Welcome Screen