I found this video on the 2 Anglians facebook.
https://video.fsnc1-1.fna.fbcdn.net/...a5&oe=55BEDDC3
It is a Foxhound. Maybe you're right that the soldiers will walk and the vehicles are just there for support. It does seem odd that there are 4 sections and 4 vehicles though and the fact that they're called 'mobility infantry'.