I’ll suggest that Gordon gets one fitted near the front door, he’s always loosing his keys after going out on a bender.

You are absolutely right. However, with no bypasses or vulnerabilities, and a more than 2mm of solid steel on all external surfaces, anchored to a secure wall, I can state confidently that unless you still live in a house with bomb-proof, bullet-proof security like Number 10 (which has no front door lock keyhole) these little locking boxes are more solid than your door, and certainly your windows.

I entered 8 houses today, and drilled no locks. I picked three on the first house, and in total I opened I think 12 locks. Not one took more than 15 minutes. After playing with many of these Supra boxes, including stripping one down completely and probing it for 2 hours, I could find no way in short of a brute-force attack that would, on average, take many hours of standing in plain sight.

Of course, the box is also nearly always located discreetly, to ensure that most visitors would not even realise there was anything there, and it is disguised, so that most people would not know what they were looking at, which adds to the security even further.

So no, unless you are giving the combination to all and sundry, you are not reducing your security. And if I thought that these useful boxes did have any real risk to them, I would not be installing them!