*walks down Knockturn Alley towards MacAbre's the same way he'd walk anywhere else -- totally focussed on his goal, paying no attention (at least, appearing to pay no attention, however, in this case it's genuine) to activity on either side of him, and in a manner that strongly suggests that stepping into his personal space would be A Bad Thing*
*walks back into the shop, and nods to the owner as he goes straight to the reading room -- Lachlan MacAbre might not recognise him, personally, (which suggests that he wasn't a Healer in this reality, since any Healer with half a brain has the sense to establish an account here) but he can recognise a Black*
*walks staright over to the armchair beside which his other selections have been neatly stacked, and to the other side, a lapdesk which wasn't there earlier, but which has no doubt been provided as a courtesy*