The question is not only retrieval speed, but where the contamination boundary should sit

A door-side dirty-shoe bag feels convenient because it shortens the shoe-change motion.

But it also moves mud, moisture and odor closer to the passenger area.

The boot wet-gear layer works as an isolation zone

Dirty shoes are not really high-frequency cabin items.

They are items that should be separated quickly after use, which makes the boot wet-gear layer a stronger home.

Door-side placement makes sense only during repeated same-day quick changes

If the route repeatedly enters wet grassland or muddy ground and shoes must be changed several times, a temporary forward position can help.

That should remain a day-specific tactic rather than the permanent default.

The strongest system separates convenience gear from contaminated gear

Items like tissues, disposable covers or spare slip-on shoes can stay in a quick cabin layer.

But truly dirty shoes should still return to the isolated wet-gear zone.