It could be a successful way. There are a lot of dialects and many people don't understand literary Mordvinian. On literary of course. Many languages have dialects. It's not a problem.
Many people here speak their own way.
I should say you have the University staff Mordovian, newspaper Erzyan Pravda Mordovian, Erzyan Mastor Mordovian, and a lot of others in newspapers, organisations and various social groups. Now I plan to make my Russian better. Your wife is Erzya. I'm not gonna make a secret of it. We are colleagues.