One great bass player who was an incredible story teller who I would not classify as a virtuoso is the late great Charlie Haden. The virtuosic Gary Karr is a great story teller even if he plays written music. Jaco was probably one of the best electric bass storytellers who also was a virtuoso. Marc Johnson is another virtuoso storyteller. I don't think storytelling requires virtuosity, but I do think virtuosity does require "storytelling" (maybe lyricsm is a better word?).