From all the attacks in my current log, I have lost just under 240k gold, total. That includes two full lightning attacks and overnight mine raids. But, I'm not trying to convince anyone to change to a vault build, just pointing out, that there are other options.
Perhaps the headline of the topic was badly misleading when I started it. But that was weeks ago, so had much more time to think about it. I wanted to create a topic to discuss about the possibility for a diffent kind of base, a vault, to protect one's resources. Not to make this a pissing contest, pardon my French ^^
The Vault is a tricky design and requires a lot more work and planning to get it working properly than an average chessboard build. Copying an excisting design is always a valid option and there are plenty of those to go around. If such a base works for you and you are ok with losing a part of your resources now and then, I think it's good to stick with such a build. I just was never content with losing a third or so of my gold now and then, so I created the design what I currently use. I had a lot of help for doing that from m'lady so I can't take all the credit for it, though. If one would rate the base with the system, people use to give points to bases, it would score not too well. But I don't care about points, I care about results. If I can have a base, which is much more trouble than it's worth to attack, I count that as success. Any base can be cracked and burned down with big enough force and spells.

