I gave my DH one before he gave me one. But he wanted to wait till he could afford something nice. What he had made cost triple what my engagement & wedding rings together cost lol, which in comparison to what people pay for wedding bands still isn't a heap..

But Yes, MY DH has an eternity ring but I don't think he wears it that often as he gets dermatitis on his fingers.

He also got his nipple pierced as a "eternity" for me on our "been together"ten years. He took it out after a year or so though as he didn't actually like it. It was just for me.