I also don't agree that leather is a 'must'. 'Not leather' doesn't have to equal 'cheap plastic' - there are lots of man-made materials which can offer comfort and a quality shoe e.g. Gortex in trainers.
Do people really not have the ability and confidence to spot a poor-fitting shoe on their child better than a spotty adolescent on Saturday in Clarks?
It's a good habit to get into - learning about your children's feet and being able to 'fit' their shoes yourself, because when they suddenly get to Size 2-3 and start needing football boots/ hiking boots/ snow boots/ ski boots etc you'll be traipsing round lots of shops without any fitting assistants!
There seems to be a lot of 'snobbery' about 'proper shoes' in the UK? In Europe and the US it simply doens't exist in the same way. A 'proper' shoe is one that is reasonable quality, fit-for-purpose, and provides appropriate comfort and support, surely?
When we were in the US last summer I bought several pairs of shoes for the DCs - suede & Gortex OshKosh trainers, white Champion trainers, GAP sandals. They were all good quality, fitted well and cost about 1/3 to 1/2 the price of the UK equivalents. None of them were 'fitted' by an assistant though.
I think too many Mums have been brain-washed by the Clarks/ Start-Rite Marketing Mafia!