I think they are a great idea, if you are having one. My sister is throwing a shower for me w/ my mom, aunts, MIL, grandmother, girlfriends, etc. Honestly, I don't want my husband to come to that. I want it to just be all ladies. He might come by towards the end to say hi to everyone and help load up the gifts. Now, if someone like our close friends offered to throw a co-ed shower w/ a BBQ and drinks, I think that would be great!
There is a big difference in having 7 guys come to your family shower w/ your grandmother and aunts then having 7 guys come to a couples coed shower!
Re: My thoughts on co-ed showers...
My MIL is throwing me a shower this Saturday for all of DH's family. It was going to be all ladies. She asked me a week ago if DH was going to come and I told her I didn't think so. I said he was welcome if he wanted to, but why would he want to sit around with a bunch of women. She was disappointed and didn't understand why he wouldn't want to come (her world revolves around him). So, now she has invited 2 guys that he is friends with to come with their wives so he would come. He is so excited (yeah, right).
One of our bridal showers was co-ed so there were a lot of women and men and he really did enjoy that one.
Now this sounds like fun!