The LSR roller is alot thicker than a regular standard nut (obviously there are a few different sizes and you can't really use the term "regular"), but you'll need to cut away some of the fretboard that's between the original nut space and the headstock to fit it with a fretsaw.
So needless to say, if you fit it, it's staying there, but they are good.
I looked at those earvana compensated nuts before but couldn't find enough info about them so i sort of shelved any thought about them.
