I have done both desk and digging. I'd say, the 4/1/4 is still good, but yeah, somedays I push to 10-11 if we are getting close to a finish point on a project.
The "push" should be only as needed and when needed. Too many companies get in a habit of saying it is needed every single day.
I moved to a 4/10 schedule many years ago. It quickly became a 5/10 schedule. I quit, I have refused to ever do a 4/10 again. I work in a field that is exempt. they will fuck you and your life as much as possible while making sure to never give you a bonus or a promotion so long as you are willing to be their slave. Never again.
Well, I work for myself, I drive as hard as I ask my guys, I won't ask anyone to do anything that I wont. If I think we can get it done today, I ask "yall want to stay till dark, or fuck it and come back tomorrow?" Usually the consensus is get it done.
That's good. I don't currently employ myself. It is a goal.
I will no longer kill myself to make someone else rich while they fuck me over (No I am not complaining about doing my job, but about being abused to the limits). I work my ass off. I spent half of my weekend working because shit needed to get done and my current boss is not a jackass and people rely on what I do.
What you describe is being a leader, not a boss.