My 2015 was recruited catcher and would agree with the comment above that most teams will not rely on a walk-on. If you are a good hitting catcher you will get recruited. Most schools will use 2 catcher where each will split between catching duty and DH. For the HA D1 ( Patriot, Ivy etc) where they play Sat/Sun dbl headers it helps to have 2 catchers.
MY 2015 hit well in a PG tournament and a showcase. Primary position was catcher with the ability to also play 1B. Got D1, D2 & D3 attention with offers with the idea of competing for catching, 1st or DH. I believe in this order - hitting, receiving, runner control is what will get a catcher recruited.