Guitar calluses for therapist?

Hello All, I was wondering if there are any therapists out there that play guitar!? I am excited to start taking acoustic guitar lessons however I had no idea this causes calluses. Does this cause a problem for your clients? Is your fingertip sensitivity nonexistent now? Is there anything I can do to protect my fingers? I have been a therapist and so sad that my new guitar may need to go back to the store :)