@gbfruitbat I wrote a 3rd person pov book with several POV characters. At first, readers struggled to relate to the main character. I tried switching his scenes to first person as one tactic to help readers relate to him better. I know one guy who didn’t like it, but almost everyone thought it improved the story.
Most writers who only have two POV characters would opt to keep them both in first or third. Dual first person pov stories are pretty popular.
That doesn’t mean you couldn’t try it through. The main question is why you want to do it.
If you decide to go forward with it, I would write a couple chapters from both povs, then get feedback on it before you write the whole book that way.