I haven't found it to be an action killer. I just adjust my indicator slightly shorter when running the split in the middle to avoid dragging the bottom to much. One advantage I think it does offers is that it gets things down into the zone a little quick in faster runs.
I agree with you though, sometimes running the double set-up is more hassle then it is worth.

12 mm beads.... I've got 10's. If you don't mind, what is your source for those?