Any Advantage to Having a Dual Point Distributor for Daily Driver?

Reviving this thread with a kwesshun or two. I am converting a slant six distributor to dual point. So, when I set dwell, do I half the total (45 degrees) and set each set to half that or do I set each set to 45 degrees which is the correct slant six single point spec?

I would look at HP 273 or 340 specs. They are make it, break it specs, so dwell should increase. Assuming a 6 point lobe...