128's increment/decrement +/- MIDI

I am considering getting your software for a specific purpose. In a drum rack with 128's mapped with macros to scroll through samples, rather than turn a sloppy knob with 128 possible values (relative to sample amount) I'd like to be able to scroll through *each* individual sample in a directory via a +/- incremental feature. I'm not referring to "banks."

I'm talking about assigning a key i.e +/- or even MIDI a note i.e C5 & C#5 to incrementally scroll through your samples in the directory. I got this idea from Reason's "Redrum" where each drum cell is pointed to a directory and has a simple up & down button to scroll through the directory chosen. The awesome thing about that (besides the buttons) was that Redrum retained the directories for (each) cell.

An invaluable old school feature without the bulk of using (let's say Battery) to try and pull that off. I could easily hook up a Push and turn a knob, but i'm trying to keep this as minimal as possible. Thank you!