How weird is a co-Ed baby shower?

My husband really wants to attend my baby shower which i think is totally fair. He wants to bring a couple friends which is fine. But then I reach the question of, will people be offended if some guys are there but they weren't invited. For example, my uncles and grandfathers etc. 
but on the other hand does it seem gift grabby to invite everyone even men? Idk!! Help please 

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