Perez would purely be a pinch runner. Bernadina could play defense or come in on a double switch.
To phrase as JCA might. Perez would be our Dave Roberts.
Sure, I'm just not sure that Bernadina couldn't also be our Dave Roberts, I think having both Bernadina and Roberts is redundant. I wouldn't have a huge problem with him being on the roster, but if I had an option between Perez and Gorzolanny, I'd choose Gorzo. It'll be interesting to see how Rizzo puts it together.