Lucky you, not all landlords are that accommodating.
They don't need to know every detail. The point is, don't do anything that causes any harm or risk to them, and they'll have nothing against you (formally or informally). Be a good customer, in other words.
Look at it from their potential POV:
Premises in use 24/365 and the additional wear and tear that creates.
I generate an order of magnitude less wear and tear than a typical tenant, which is a car repair shop by day, and hobby car repair shop by night.
Sleeping on a bed for 8 hours generates 0% more wear and tear than sleeping for 30 min, which is clearly allowed and normal.
Higher insurance risk.
Err, nope. No difference whatsoever.
Greater/faster property depreciation/higher maintenance.
Nope, see the first point.
I have been able to report things like roof leaking during heavy rain in the middle of the night with zero latency. My landlord likes me thanks to this fact.
Have you ever considered if the landlord isn't factoring into the lease these additional costs imposed upon them from live-in commercial tenants then they're subsidizing your lifestyle ?
No, because this is based on your imagination based on non-facts caused by not properly reading what I wrote, then extrapolating between the lines. Please don't make assumptions on my "lifestyle".
A buddy that has commercial tenants won't allow such live-in tenancy agreements other than 12hr/6 day occupancy.
Such agreement isn't in place. Sometimes you need to stop looking at things legal/paper side first, and concentrate doing the right thing, and being excellent to each other.
I have no more comments regarding this, let's keep on track.