Pretty sure the last testing I did with the details form Hans's blog[0] the behaviour was that if the nvidia driver failed then the nouveau driver was a fallback (rather than the older instructions that totally blacklisted it leaving no GPU at all).

Of course this is only helpful when the GPU is supported by nouveau ;)

Note I haven't tested the negativo driver yet on the stabalization copr as I prefer the bumblebee experience since that keeps the discrete GPU powered down saving battery and temperatures when not in use ... and the negativo driver flips everything over to running on the discrete GPU and ignores the Intel integrated one.

Given that it's fundamentally the same driver though I expect the experience to be the same - willing to test and report back :)