Have you considered GT bikes - Traffic series offer disc brakes on higher end models. 700x35c Schwalbe Road Cruiser tires - I ride hard pack gravel & dirt - certainly not afraid to get off the MUP into the grass or to bunny hop a short curb.

My GT Traffic 3.0 weighs under 25 lbs. and I even ride with cyclosrossers sometimes. I've had it for a year- likely commuted 200 days x 20 km, along with weekend/evening fun rides, grocery shopping and a few day tours- estimate 5000 Km and no issues, other than regular lubing and tightened brake cables this spring.

Should mention add-ons: rear alloy rack,rear panniers(with trunk bag), Bontraeger clip on plastic fenders, softer ergo grips, bar ends, front basket/handlebar bag (quick release) , clip on lights & Airzound horn.