I'm so sorry, I must have misunderstood what you were saying.

on average, carry 1.5 to 2 liters and that is enough to get them from one water source to the next

know that we can easily get by with carrying 1.5liter each

I'm guessing 2 liter storage is about all we'll need that we can keep filling.

You asked for opinions, you got mine; use it however you want. But then, I'm sure you know the canyon far better than I do. Good luck with your trip. I
May I walk in beauty.