Was that the answer to my question? As I did grab the signpatches and can launch my games (and tinfoil) just fine, just unable to launch the homebrew menu with full memory access :/
I've updated Atmosphere after a good couple of months of my Switch gathering dust (needed to delete atmosphere and sept folders in the process, as it failed to launch after simple overwrite) and now I cannot use title override - pressing R while launching a game/app launches that app rather than...