No mate, ive never watched us.
Im aware of what their role is within the team and im aware of their defensive duties, it doesnt change the fact that I personally consider them forwards, tasked with attacking play, of course in a Dyche system they are expected to maintain a defensive shape, hence their goal output being low.
For example.
Kevin Sheedy, he played Left midfield of a midfield 4 for Everton, in his day, Wingers were considered midfielders, but he was still expected to chip in with goals, his primary job in the team is to help with attacking.
But to answer your question, if they played for Liverpool, they would play like Mane and Salah, off the Striker, but they play for Sean Dyches Everton, so they sit back.
Serious question, if they arent in the team to attack, what are they in the team for? To double up on the fullbacks that never pass the halfway line?