Is this the same as potato onion?

I just heard a talk by Ira Wallace from SESE and she was talking about onions that look like this

This is seed I bought last year. Yes, I know these are not usually propagated by seed. I had read an article about a guy who by chance got seed from his multiplier onions and this is the commercial source. I am still working on getting a crop from these, so I don't know what they are like. Caleb Warnock