There is no stupid steel questions on this site. Good on you. That's part of the reason for sites like this to get all the advice you need. Keep the questions coming there's a bunch of clever guys on here who are always willing to help.
Tuners " usually" modify the sound of the instrument Specific Pro Volume pedals have a 2nd output - which is most often used for the tuner the poor bugger's out on his own rather than having him " in the chain "