On the other hand if you were a Swiss cardholder travelling in China you'll be cursing the DCCing banks for a double rip-off right now.
HSBC (not sure if just HK or globally) also screwed up by not updating its CHF rate between 19:30 and 19:45 allowing customers to arbitrage
http://hkm.appledaily.com/detail.php...issue=20150115 .