Bombardier Aerospace announced today that Geneva-based PrivatAir has placed a firm order for five CS100 airliners and has taken options on an additional five CS100 aircraft. PrivatAir was founded more than 30 years ago and operates a large fleet of commercial and business aircraft to provide private charter and private airline services. Its specialized services include exclusively business class flights on behalf of several major network airlines.
PrivateAir has experience with both the A320 and 737 families in all business class service for various airlines. 
The capabilities of the CS100 to use short runways, like London City, opens up intriguing possibilities of what this news might entail.
It looks like the CSeries will be popular as an All-Business-Class aircraft. It has a nice combination of field performance, range, fuel burn and passenger comfort. And with it’s expected low noise environment and modern interior it should provide an agreeable experience to the Business Class traveller.