First off, kudos to you two for participating in the Walk. The Susan G. Komen Breast Cancer awareness walks (http://ww5.komen.org/) are a blast to participate in, and definitely help the community. I say if he's okay with wearing it, go for it! Having participated before I know the people there will appreciate anything you do to help support and motivate them; especially if it means wearing pink!

As for the motorcycle, I have no experience, but am thinking it's not a good idea. Road rash.....<shudder>

Aaron