What I'm thinking is, I can make two versions of the .xml file, one for use with DUI, and one for use without. The .esp file would be the same, and users would get a HUD strain meter whether they have DUI installed or not. The only thing that changes really is the font specified in the XML file, and the io() object used to turn on and off the HUD when you do things like open the pipboy or the main menu. So there'd be one version of the tweaks, but an option as to which folders you paste into the data directory. I could also add an encumberance gauge to the non-DUI version.