Have been storing mine in Zero-Haliburton aluminum cases for years, couldn't be happier. Price on the one to your link raises a red flag.....better quality aluminum cases run 2-3 times what that one goes for. My first question....."why is it so cheap"?
I used to carry a Halliburton briefcase but fell out of love with them when I saw that a new dent showed up everytime I looked at it.
For a briefcase now, I use a Pelican computer case with a utility liner in it, and I've converted other people very easily when they see how tough it is and being waterproof as well.
I tossed the strap, but this is it, and a whole lot more durable and less expensive than a Halliburton: http://www.casesbypelican.com/pelican_1490_laptop_case.htm
But here's a Pelican gun case that I don't have yet but soon will based upon my experience with their "briefcase".
Not cheap either, but WAY better than any aluminum alternative: http://www.casecruzer.com/gun-cases/handgun-6pack.html
A pair of bolt cutters and it is gone Like that thing that was to lock steering wheels on cars, watched a kid on TV remove it in 30 seconds just by cutting the steering wheel with a hacksaw. If some one wants something bad enough nothing will stop them