Wish I'd looked for the reviews beforehand- but assumed they would be reputable given they say that they are one of the company's on "one4all" gift cards. They aren't... gift card balance is now nil and they will hold the balance for up to 1 working week.
According to customer service you can only pay with one method. You can't pay with the gift card on part and the balance on another.
Between this and the number of people that don't seem to get their orders, it definitely appears to be a company that will take your money quicker than you can blink... but you can whistle for your money back or the shoes you've paid for. Just don't to it!