5.9 magnum with M122 blower/intercooler

You may be right. The alternator gets about 90 degrees of belt wrap.
The power steering pump gets a little less, but it's a much larger pulley, so contact area is probably more.
I'll take the gamble.
If they slip and squeal terribly I'll come up with a more complex serpentine setup later.
Also I've never seen a V-belt with a tensioner on the outside of the belt.
I think it would probably kill it pretty quickly since they're not designed to flex the opposite direction.