What is the difference between split cork and full cork handles on Bass rods these days?

Is there an advantage with one over the other?

i think it's a case of personal preference as a split grip rod looks very nice.  But performance wise it makes your rod lighter having a split grip, but it's all about balance to me.

Looks and weight.  Lots of people say the split grips increase sensitivity as well.  I just like they way the split grips look.  I like a full handle length to cast with both hands though.