Congratulations on your beautiful new scarf. That is so pretty. I’m sure you will enjoy your new beauty.
I am in the process of reading this thread from the beginning and, after the first 200 pages, I can assure you that the mousseline is surprisingly durable. Be sure to keep it away from cats (they like to pounce on swinging ends), dogs (they have been known to play tug of war with a moussie), and Velcro/zippers/rough jewelry (snags). Most spills apparently will wash out.
Do wear it a lot. Enjoy!!!!!