It's interesting for a couple of reasons.
Firstly, because the British put some money into it to try it out.
Secondly, because it has been evidence that just because troops think it's a good idea doesn't mean it actually is. Take, for example, the camera which hangs under the gun tube. The thinking is that they can look around corners by sticking the camera out, and having a peep to be sure it's clear before they commit the tank. That's fine as far as it goes. However, the British discovered that what was happening was it was taking so long for the tank to get from A to B that though they had a fantastic chance of getting to B intact, by the time they got there, the enemy had created a very capable reception committee at B. Overall, survivability and mission success was increased when the gadget wasn't present, regardless of how the crew felt. A bit like the sandbags on Shermans in WW2.