In reply to Flinticus:
Simond Vuarde Tech slippers, £50 from decathlon online, cant go wrong
. Out of the box they're stiff enough for decent edging but slowly soften into great smearing shoes. One point is the heel isn't great, but if there's one thing that's difficult to get right with shoes it's the heel, everyone needs a different fit! The best fitting heel I've come across so far is on the Scarpa Instinct Velcro but they are toe bending talon shoes... :p
5.10 also do a purple version of the Anasazi Velcro's which uses the older stiffer rubber and is meant to be better for edging. Also there's the ever popular Scarpa Vapour velcros which are a good all-rounder.
Hope this is helpful,
Pete