You are probably correct. SWISS has no intention to use the CS100 on longhaul flights - they will be used within Europe. It also recently upgraded 10 CS100 orders to the larger CS300 for higher density intra-Europe routes.

Keep in mind that the CS100 is a roughly 100 seat airplane while the CS300 seats roughly 125. The CS300 fits the 120-140 seat gap and it can be used on a variety of route types. If UAL were to make a play for the Republic CS300 orders and options (50/50), UAL could bring the unit cost down to a more reasonable level to compete with the new E2 from Embraer which won't be dirt cheap either. Older E190s like the ex-Air Canda birds cast away to Delta via Boeing are probably cheap, but the newer E2 versions will need to be negotiated and they won't be available for another 2-3 years. The CS300s that can't be used by Republic due to scope restrictions could be available in latter 2016/early 2017. Flying a mix of CS100s and bigger CS300s would be probably be the best combination. No doubt I would volunteer to fly it if UAL hired me. LOL!

I do agree that Embraer does have an advantage with so many E175s flying in UAL colors currently.