Assuming the bow tune didn't change at all, including diameter of arrows, the only difference would be arrow speed.

The problem with one set of pins is that you would, in theory, have totally different yardage numbers, you couldn't just say what was 20,30,40 is now 25, 35, 45. The rate of drop would be greater for the slower arrows, so the numbers would become something like 23, 35, 48

You might be able to do it, but would you remember the two sets of numbers.

Two better options:

- 2 sights, one setup each way

or better....

Use the same exact setup for hunting!