As Mike mentioned, I have Bluegrass Memories here and it does well for me. Even had one rebloom scape this summer. It looks a little crummy in the spring like many do, but recovers nicely. Claudine's Charm is one that is registered as evergreen that I have and really love, I always highly recommend it.
I just went through my spreadsheet and sorted by registered foliage type, these are the ones that are evergreen and I would say do well here for me (and I have had for more than a couple of years) - this list is in order by the ones I have the longest. Bluegrass Memories is SEv, so is not on this list.
Cameroons
Green Mystique
Wispy Rays
Coyote Moon
Claudine's Charm
Insider Trading
Buddy's Betsy
Jane Trimmer
Fabulous Frieda
Ciel D'Or
Morticia
Patricia Snider Memorial
Special Candy
Olly Olly Oxen Free
Silver Sword
Judge Judy
Yoga Man
Absolute Ripper
