Wonder will Ryanair follow suit ?
Ryanair have to date decided to keep their operations entirely within the EU where they can operate what they like without all the route licence complications that are needed when going outside.
Easy have had a base in Switzerland, outside the EU, since their early days, so are more used to this.
Regarding which of their 3 London bases Easy use to serve new destinations, it seems to be an absolute lottery at the moment. There probably is some logic, but I can't see it.