I got my Welsummers from Estes. I have been very happy with them so far, I like the personality and also the eggs. And the one Roo is a good guy, so far.
I have seen a couple small spots of frostbite (I am in West Virginia) during the bad cold spell, down into the teens and once down to 3 degrees at night, but nothing bad, and they have healed up nicely.
We kept them heavily bedded, fed them VERY well, and tossed stuff in the hay to keep them busy, but of course they roosted at night, and that is when the problem was.
None of them acted bothered, they all just pecked happily around and laid lots of eggs.
Catherine