Yes it is possible. Obviously it is not as easy as the other way around due to the smaller size of EZS. Currently there is a transfer list for Fo's only and it seems that most people on there had a response within 12month.
But, keep in mind, that things were moving due to the fllet expansion at EZS (so, once they got their aircrafts, things might slow down again).
Once you hit the top of the list and a transfer is offered, you have your interview with the swiss guys, change of operator courses, etc.