Concealed wiring & Aesthetically pleasing industrial installations

Oh, I'm a long time forum user, but I have created a new account as I'm 'working from home' after some unpleasant surgery

We are creating a new manufacturing area, and I have been asked to specify that all the supply cables are concealed, that is, 63a TPN isolators, metal clad sockets, ceeform sockets etc etc.

The walls are 3/4 ply wood and have a 10" void behind them, which would be almost unrepairable 

Anyway, I have got to specify kit and set a standard so it can be repeated over and over. The problem is that all the industrial sort of kit tends to have top or bottom entry and metal clad sockets are all designed for surface mounting. Plasterboard boxes are a bit flimsy. We think there is enough room to sweep the armoured cables into the isolators from the back, and almost against my better judgement, I think we are going to be using Proteus E32TN and E53TN as Schneider are just beyond the budget on this project.

I will be using Schneider boards and MK sockets, to match the rest of the site. 

Has anyone got any experience of this sort of thing, or got any good tips, especially on the sockets?