It makes sense to do the check, and I think most shooters are responsible enough to accept that it happens, that it should happen.

Riding in a group, even a pair, isn't as straightforward as it seems right? I used to ride a lot with a mate and we could ride close if required, I knew what he would do and he me in return. But I've ridden with others who were erratic and unpredictable which is disconcerting.

Like with the firearms, a test ride will sort it out and determine what he's like. From there you evaluate and decide if a longer ride is acceptable. Telling him no, in the advent he's a shite rider, is the problem though, figuring out how to do so and retain a neighbourly relationship.