The fact that it's their own shoe, has a RRP of £79.99 and is at half price would concern me a little. It's not that they couldn't put a shoe together as good as a brand, but the technical details you often don't see in a shoe are usually there in the branded footwear but missing in plausible looking copies.
Usually an unbranded "copy" would pitch in at £40 so I'm sure this was designed with a £40 spec.

I have to say, it looks quite good - I'd be interested to see if anyone has feedback.