The first time I came to Switzerland, in 2002, the Swiss Franc (CHF) was roughly two to one against the dollar. This meant that I could simply divide the price of Swiss goods in half (more or less) to get an idea of its worth, instead of converting to the Euro, which was at an odd value, 1.28€ to every $1.00.
This year, I’ve found, is even easier, as my request to withdraw 100CHF cost me $97 and change. At roughly one to one, this made it especially convenient when figuring out the actual cost of a single hamburger at the airport in Geneva, which was 7CHF or 10CHF with cheese.