Cladding mock-ups are for people involved in the development. To see what the exterior facade will look like in real life.
Most of the time cladding mock-ups are tucked away on the construction sites, so the general public don’t get to see them.
As a rule you can find and see cladding mock-ups on-site by looking through fences and over hoardings. ;-)
The Coop Live cladding mock-up was at the entrance to the construction site car park on the Collar site, visible from Alan Turing Way. You could literally stand underneath it.