Well, the question is about the fraction of their reserves which isn't denominated in CHF, so buying lots of chocolates and watches won't help with that. As to the anonymous Swiss bank accounts, it seem to be so, I dunno, 2004... Not so much in Switzerland... https://en.wikipedia.org/wiki/Swiss_executive_pay_referendum,_2013 A bit concentrated, this... At any rate, they own lots of Tesla as it is.
Banjo, Thanks for the link. What is more interesting and scary to me is the other article in the same site: http://www.firstrebuttal.com/bill-gross-may-investment-letter-the-scariest-thing-ive-read-in-years/
So shall the church of Capitalism, ignorantly disregarding what destruction unregulated profiteering has created for most beings in this world.. and the inherent instability of all FIAT currencies and inflation. Just pointing out that magical thinking like this is still creating poverty for most in the world, which is easy to ignore when having been on the benefitting end of exploitation for so long.