Good for you!
My hubby has a friend who is married to a tree hugger. She has the hyphen thing, which annoys the crap out of me. I never know how to address the correspondence to them. Do I put (fake names) Tom and Jane Smith-Johnson, Tom Smith and Jane Smith-Johnson (too much writing), Mr. and Mrs. Smith-Johnson (his name isn't Johnson). It's all too confusing. I always put Tom and Jane Smith and I don't care if it p!sses her off! That's what she gets for making it hard on the rest of us!