Cameron White

I think this is coming from the Orientation Along Curve SOP - maybe there need to be some additional parms promoted like `Transform Using Point Attributes` so you can override the up vector and avoid twisting.
Could you submit an RFE?

This was very recently fixed upstream in USD (https://github.com/PixarAnimationStudios/OpenUSD/pull/3841) so I'd expect that to be available in the next major Houdini release

Another alternative workaround is using the crowd procedural, which has some options for baking out the skinning for all agents (equivalent to the Bake Skinning LOP) - this is done just at render time and for the relevant time range

You can likely do this purely in SOPs using Agent Animation Unpack (output either a single motionclip, or a set of packed motionclips), and then use the Agent Clip SOP to import these into the other agent definition

In Python, there is a hou.AgentClip constructor that lets you make a copy of the clip for the other agent definition's hou.AgentRig

These both would require having matching skeletons / joint names for the joints that you want to copy animation between