That's the fundamental fail of ZOS decision to release a console-centric UI and expect add-on writers to make something vaguely similar to what PC players expect .. the add-ons break and often the writers have moved on and the thing gets abandoned.Just as an aside, I use the Wykkyd Outfitter add on, you can have a different set of armour and different weapons and skills to go with them, then change them on the fly (obviously not while in combat), but any other time you choose, just select your heavy load-out and switch over.
I don't use it that often, as I try to stay faithful to my preferred build (vamp NB with med armour, DW and Bow, but it can be useful sometimes. Only thing is, Zeni patches mess it up, you have to save both your builds into it again
Edited to correct iphone spell corrector