I guess I'd have to say, I'm doing it, but I'm not telling anyone else to do it.
Your weights are very close to mine. I have been towing this 34' HitchHiker II for 14 years (see my travel map). We have towed over most of the passes in Colorado and many others in the western states. Two times in emergency situations we have had to tow without trailer brakes--once over Monarch Pass. The other time we had to tow back home from Coastal Georgia to East Texas (weekend and need to get home. No repair available). I would never advise to tow without trailer brakes, but I can say (like the Bumblebee) I was able to do it when I had to.
We have a 2017 Chevrolet Duramax diesel. We have actually been towing with a 2500 diesel with 4 different fifth-wheels for over 20 years, but we have towed this HitchHiker with the Chevrolet 2500 for over 100,000 miles. I have never felt any lack of control or stability on the highway or over high mountain passes.
Of course I'm pretty experienced: almost 200,000 miles of fifth-wheel towing and 88 years of age! :R :B