Mnot wrote:
I have seen some bent arms but I don't recall seeing any that have a rod end on one side and a clevis on the other. Is having a "joint" at both ends asking for trouble?
Yep. You'd be using the jam nut on the clevis to carry the torque load from any misalignment--if it wouldn't work with a ball joint on each end, you need to give some serious thought to where the load is going.* If you use straight tubes (no torque) there's no prob, and indeed it's quite common...presuming the clevis is only used for adjustment and isn't part of the suspension travel. The hot rod guys occasionally use clevises on four bar and hairpin suspension, where the clevis pivots with every bump, but I think that's a bad idea myself.
*The Kinetic upper ball joints use a clevis, and wouldn't work with a ball joint on each end, and I gave it some serious thought (and some testing too). I'm not saying it can't be done, I'm saying you might find unexpected loads if you dig, and it's particularly likely if your clevis attaches at an angle to any loads. In summary, it's not a no-brainer, so I guess you better use your brain.