. I think if you do the EE's, they are mixed breeds and you can't breed more EE's from EE's (anybody, feel free to correct me...as that is my understandings)....my two cents....
Depends on what your EE's are made up of. Sometimes people mix other breeds in and EE's can contain other breeds and lay various colored eggs, but if you keep your EE lines going as EE's they reproduce themselves very well. I have several generations of identical ones laying the same colored blue/green egg.
In some (many?) places, if you get Ameraucanas (Americanas?) they are actually EE's and not the purebred recognized Ameraucanas.
I was just looking at a sheet of available birds to order and it said Ameraucana, but are they the true Ameraucana? Plus it said they lay green eggs.
But either an EE or Ameraucana with pea combs, should fare better in winter than the CL.