John used this blog's submission form to e-mail me the following question: "What does it truly mean to be 'on the practice squad' anyway. ... Are they truly in uniform and out their practicing with the regulars on game weeks? I can't imagine they get many reps, or that any coaches have much time for them. No? Is it like the NBA having 15-man rosters but only 12 active for games? Is it really just an inactive list?"
I'll try to tackle your question in parts: