Note that the Calumet C1 8x10 does have fine 5x7 and 4x5 reducing backs. And the camera is a tailboard design portrait camera. Meaning the back standard is used for focusing instead of the front. That way the lens, once composed, never shifts its position relative to the subject, and hence its perspective always remains unchanged.
But they don't call it a Monster (magnesium) and a Beast (aluminum) for no reason. It's all metal, heavy and bulky. It needs a big-boy tripod and head. Preferably a Majestic head, if finances permit. And wider angle lenses can be tough to focus as one must lean over that obstructing rear tailboard to get eyes close enough to the ground glass.
(But it does look very cool when set up out in public!)