With ctrl-R you'd presumably need a bunch of absolute path navigation commands in the past, with z you don't need to worry about that. There may be more clashe

With ctrl-R you'd presumably need a bunch of absolute path navigation commands in the past, with z you don't need to worry about that. There may be more clashes, like picking up on filenames instead of directories. Typing `z res` or whatever is also a bit faster than hitting ctrl-R then `res`.