I have a toddler dd who has been in Clarks shoes since she could walk, the same as my older dc who still has Clark's school shoes.
To be honest I'm sick of paying extortionate amounts for ugly shoes when I could get some trainers that look nicer, are much cheaper and are still pretty sturdy.
I know Clark's are meant to be supportive for growing feet which is why I've always bought them for my dc but how important are they really?