Either way would look fine. No one will really give it a second thought.

I think it will look just fine.

I love the monogram on it!!
But it isn’t overly necessary

Thank you both for your comments and thank you CDR for creating this very helpful image! I think I’ll go ahead and purchase this mat without the monogram. :)

Happy to help. I am not a fan of monograms on doormats. As you mention, it often feels pretentious and second, people wipe their feet on it and the your seemingly very meaningful and important "letter" is smudged.

Not very elegant anymore.

It’s only for your back door, so I wouldn't worry. It does though look a bit off - place your thumb over the circle to envision without (looks better).

There are so many nice mats to choose from.