Aha that's funny. Yeah, I'd like to hear the vocal version
I was more thinking find someone to collab with (there are so many amateur rappers around these days) than using samples, but I think you'd have trouble finding someone who was both good and didn't overdo it and dominate the track.
Hell yeah man this rolls! I think the vibraphone sound at 40 seconds-ish could do with a bit of a lift to really get the atmospheres laid down. Really like the variation in hats and cymbals throughout, makes for a nice dynamic feel. The only other criticism I have is that the reece is maybe a bit constant as the track develops, I feel like some choppy bass stabs coming and going could really spruce things up!