Visited on April 19 without charging.
The CHAdeMO charger is actually an HYC_400, so it really is 400kW on the CCS.
The screens show the ad-hoc price for credit card is 0.64CHF/kWh, which is different than the other 2 Electra clusters here and different from most Swiss stations. Though I also noticed this in Spreitenbach. The price is not repeated on the old style LED signs above, and not on the contactless reader either so there's no double confirmation. I have not yet been able to visit the rest stop on this side with a car to test what the price actually is.