Damage to me: cut above eyebrow which will some day lead to a fetching Harry Potter-style scar, slight nosebleed (which won't). Damage to him: split lip or gum (not sure which) and probably some concussion. Ouch ouch, mostly on his behalf.
The weekend was otherwise largely uneventful. Good drills session on Sunday morning left me realising that my one-foot balance still isn't all it could be.