First order of business is a minor rules clarification:
Notice the 'Pushing Ahead' rule just before the section on Treasure Hunting. In the most recent version of the Manual (1.0.3) we've added a small sentence to the end of that rule. It reads, "Likewise, characters may not walk alongside their mounts in order to use the walking symbol." In other words, when the group is traveling with Mounts, they must use the Horse icon for group movement - it isn't optional, meaning players aren't allowed to roleplay walking alongside their mounts in order to use the boots icon (something players with a Treasure Hunter may be tempted to do). Those with version 1.0 of the Manual could easily overlook this clarification and make a mental note of it, or even make a small notation right on the page.
This has also inspired a new Q&A entry at the end of the Grouping chapter, page 43. You will now find at the top of the page this entry:
Can I stop using an Item of Special Movement in order to use the walking symbol? During travel time any item of special movement your character has must be used until it is replaced with a mount, or, the item gets traded to another player.
Now, we don't imagine this coming up very often, but those paying close attention may notice a kind of open-endedness to the statement. The key word there is "traded," and the notion that sometimes communication and negotiation among players can affect various aspects of the journey.