But how quickly/often do you want to switch samples? Do you want to trigger them from another device?
I don’t think that the GR-1’s audition mode would be a great mechanism if you are trying to randomly scrub through a bank of samples. (as you have to hit play and use a rotary encoder to navigate a kind of arcane file structure). If you are trying to layer longer samples (up to 4) it can be kind of cool in standalone mode.