funny enough i can only smoke one pipe while walking and that's my Morgan bones apple pipe. I use it mostly for peach aromatics and find it to be easy on the draw and clinch. I will say that getting the rhythm was an effort, from knowing when to puff or rest.
I'd suggest using a light pipe with some shortness to it. use a blend that doesn't mind being burned a little faster, and learn to not puff while walking. Just clinch and breath out your nose and you'll gradually get smoke in your mouth. The hard part is trying not to breath in through your mouth as you'll get some pretty harsh smoke in you throat and lungs.