I'm hoping the scumbags if they do look under will see the cat isn't genuine and see that it has no value.
At £55 it's cheap though, albeit with hassle if stolen. Worst bit is new/repair downpipe. Plus if have a cat cover need to declare it as a mod to insurance.
Have a BM make full exhaust inc downpipe and so far lasting well. 4-5 years old. Under car today changing oil cooler hoses.
James