Does it seem tacky to use an engagement ring as a wedding ring?

I think if you love your e-ring than still use it. I loved mine as well but my man wanted me to have another so he bought me one. I say do what makes you happy and I am sure your man is pleased with the idea of not having to buy anymore diamonds. Engagement rings are beautiful and you cannot tell the difference between wedding or engagement they all look the same. Wish you luck and great choice.