@Dani
Falling into old rumors traps...? Autsch.
Swiss doesn't do it anymore. There have been a lot of small airlines that used to do it (incl. Lufthansa), but from a certain size it doesn't bring so many benefits anymore.
Swiss does it. And works nicely.
However, they are evaluating the impact of 7 different "kind of types":
A319
A320
A320E (-IJU/V/W)
A320E (from 2010 on)
A321
A330-200
A330-300 (from 2009 on)
Since all these nice birds have been built in different decades, this might cause some headache. But generally everybody loves the idea of MFF.
And to get on topic: Flew Boing and Airbus, and prefer the Bus by far.
So far the facts.
N1