Mmm, Sera fans really dislike Solas.
I don't hate Sera, she is interesting butt (
) as a Lavellan it was tough for me to connect with her.
She immediately accuses my Inqi as being elfy and hates elves just because (the prejudice is strong with this one :|).
While Solas is indeed a bit 'elfy', Sera is really, actively, anti-'elfy', and for bad reasons. If people deem Solas racist then how can they say she isn't as well? It's just against a very specific race, is it because she is an elf herself? (I don't think Solas is racist btw, he isn't the nicest to Dalish elves as well. I do think he is an elitist though, but I like him having flaws so all is good). Any character of any race (other than elf) that will speak like her we be frowned upon and deemed racist.
My Lavellan did become friends with her, but only after she managed to see past that trait of her. On the other hand Lavellan also thinks it's silly that Sera is Andrastian, especially after what happened at the Temple of Mythal. Once you get past her childishness she makes a lot of sense and she has good insights (childlike insights, like a child would ask "why do people go to war?" or "why are people mean to each other?" etc, the innocent truths of the world people never question out of habit and such).
By the way, did your Lavellans get along with Sera? 
After the breakup with Solas my Lavellan went to sit with Sera on the roof :<
Edit: Also, although Solas does not agree with many of the views of his companions I always felt he is really open-minded, I felt that way even before I made a character for him, I think it's probably what made him to intriguing to me.