Has anyone had good or bad experiences with elastomeric paint on their stucco coated homes?

My mother is looking into getting her stucco redone and i've looked around a bit for information but i'm finding little in the way of reviews. Behr makes an elastomeric paint and i've always like their products so i'm tending to think the concept is a decent one.

Any advice?
Experiences to share?
Anyone in that cold Canada climate that has tested the material?
Idea of cost?

"Those who preach the myths of audio are ignorant of truth."