Oh man, I feel this so hard... wrapped a brisket in foil once and it just steamed into a soggy mess. Switched to butcher paper last summer and it was a total game changer. Lets just enough moisture out so the bark actually sets up instead of getting soft. Still keeps things plenty juicy too, best of both worlds really.
Ever think about how the thickness of the butcher paper changes things? I used a really thin paper once and it almost burned through. Thicker paper holds up better but might not breathe the same. It's a balance between keeping the moisture in and letting the smoke do its job. Maybe we're all using the wrong paper without knowing it.