I've had a back/bicep day in my split for over 5 months, but i've always worked through all of my back exercises before moving on to the bicep exercises. After thinking about it, would it be better to place biceps first? It would both make sure that the biceps aren't pre-exhausted by the pulling exercises that use the biceps as a supplemental muscle, and make sure that the lats and back muscle bear the brunt of the load on said exercises.
I know that quite a few people have a back/bicep day in their splits. Thoughts?
(I'm aware that I halfway answered my own questions, I'm more looking to see if anyone has a good reason to keep back first, or if people agree with this thought.)