To me, the guitar cuts through. It carries more than the organ, but the organ has got more guts.
When I got pretty good I went on the road with a group. We starved.
Regardless of what you play, the biggest thing is keeping the feel going.
I never practice my guitar. From time to time I just open the case and throw in a piece of raw meat.
If a jazz player is really playing, the classical player will have to respect him.