http://www.youtube.com/watch?v=MmjZToHAIhE
Chick Corea Electic Band - King Cockroach; featuring John Patitucci on Bass.
Please note all the fingerstyle bass playing on the Smith, while the slap, crackle, pop stuff is done another bass. Mr. Horn demonstrated that both can be done on a Smith - however in this video - it is done using two different basses.
I suppose he desired a different type of tone for the slap (thump) section of the song.