I had some questions about riding other player characters. I have seen other threads posted about this and there seems to be no consensus.
Is riding other player characters allowed assuming they are willing?
Can medium bi-pedal races such as human be used as a mount for small races? I assume they are considered ill-suited and take a -5 on ride check but are there any other problems?
How does initiative work in this case?
How does movement and full attack work for the mount and the rider?
Who is in control, is the rider in control of everything or do they act independently?
What ride checks would the rider need to make? Just to stay in the saddle or more?
For example, can a small halfling PC ride a medium human PC, providing they have the strength, an exotic saddle, and the necessary ranks in ride?