From the linked blog:
"Von Greyerz also told KWN that a major Swiss bank did not have a substantial amount of allocated gold which they claimed to possess for their client: “We are stressing to investors to take their gold out of the banking system, not only because there are runs on banks that will continue, but the risk of being in the banking system is major. So you should take the additional step of not just owning physical gold, but also owning it outside of the banking system.
We (just) had an example of a client moving a substantial amount (of gold) from a Swiss bank to our vaults, and we found out the bank didn’t have the gold. This was supposed to be allocated gold, but the bank didn’t have it. We didn’t understand why there was a delay (in our vaults receiving the gold), but eventually we found out why there was a delay (the bank didn’t have the gold). It’s absolutely amazing, but not surprising.
This confirms what I’ve always thought. Not only should you not have gold in banks or even unallocated gold, but even allocated gold. It seems that some banks don’t even possess that. So the risk of having gold in the banking system is major.”
If you do not have it in your personal possession, you don't have it!!