I'm always the contrarian....while I can hear the subtle differences that various woods make I think that maybe for some woods the differences are too subtle.
As call makers we hear things that buyers do not hear. We have a sound we are looking for and often find it by changing strikers. The funny thing is that you could call in and take a turkey with any number of striker/call combinations. Sometimes we as makers and hunters alike obsess over the little things. I'm just as guilty.
Like you I am going to be using domestics exclusively. I am in the early stages of branding my calls. I intend on advertising them as 100% American made with 100% American components. Walnut, cherry, persimmon, black locust, pecan, hedge, poplar, etc. I find that on glass and copper/aluminum is where I get the biggest change with different strikers. I would say to my ears that persimmon is very close to PH.