You might want to re-think it. I have several 870s & I think it is an advantage to using the right-handed version. There are even a few competition shooter who are right-handed buying & using left-handed shotties.
You can check the chamber without rolling the gun over.
You can load extrs rounds directly into the chamber, again without rolling the gun or reaching over/under.
Plus you can reverse the safety so it can be used lefty.
Forgot to add I'm left-handed as well.....