It was, yes.

The deceased wasn't the type that would want anyone to put on their Sunday best just for him, so it made sense. But when I mentioned it to my father, he commented that no one really wears suits to funerals anymore, or even weddings.

Just across (south) of the bay from you judging by your name: I was at a funeral recently, not many people wore suits. Of course, nobody wore shorts or anything, but not too many formal suits.

That's how we did my grandfather's memorial. Grandma didn't want it to feel formal and we weren't about to force that.