For me, BPW and total PW are the most relevant as the *increment* for a given activity. Virtually all of my miles walked includes my regular clothing, shoes, and pocket EDC, and virtually all of my miles biked includes bike, tools, helmet, lights etc (my baselines) so the incremental activity of backpacking and bike touring (over walking and bicycling) is really just the incremental bag, gear, and consumables needed to sustain for multi-day walking/biking over the daily baselines.