I went with the iShoot mostly because it has a longer foot/plate which I thought might help with balance on my Wimberley MonoGimbal... The Haoge has a strap lug built in, I added two lugs to the iShoot with a slim Peak Design plate on top of the foot (so it doesn't obstruct ARCA mounting from the bottom) - the plate they ship with their straps now rather than their Capture plate.
I don't think either one is meant to completely clamp down on the lens and lock it in place like the OEM one does, which I didn't really need for my purposes on a monopod (I actually
want it to rotate semi loosely there), but they won't come open by mistake either since you do have to pull on the knob to fully open the C parts.
Apparently there's a new version of the iShoot (IS-TA5040, linked below) that might actually lock the lens in place when the knob is fully turned, or at least it's implied in one of the images, hard to tell... The foot is 20mm shorter but still looks longer than the Haoge's. I might order one to try it and return if the functionality is still just the same as the IS-TA140.
https://a.co/2vHgMaP
Ordered, should be here next Monday... Can share any differences then. Kinda silly to add up the cost of 2 third party ones but ehh, I dislike that the OEM one carried over from their DSLR lens has no strap lugs at all (unlike the new one Tamron made for the 150-500...) and no extra screw taps for a DIY solution.