In reply to Misha:
I cannot follow your statement about LS being notoriously narrow.
I have wide feet size 11 and I have always found LS's (after the Mirage http://www.vvv.ru/img/goods/2189.jpg) very comfy especially Miura, Speedster, Skwama, Viper, Cobra etc.
I had 2 pairs of the old Quantum and quite liked them even though the last is strange and painful for my feet after a while which they share with most of 5.10s I have owned (except the old Anasazi pink).
They also get soft very quickly, especially in the middle. So: If you make them (Quantum) wider, add a bit of downturn and improve the flex in the middle you end up with a very good and performing allround slipper with velcro closures - something the Skwama does very well and what 5.10 has IMHO been lacking a bit lately. Hence my silly comment offending her majesty's shoespecialists.