I can't say that I've ever been bothered by deep snow up where I am. I always start with the windshield (and all other glass) perfectly clean.
I feel, as some of you do, that the shape of the drip rails will cause a build-up of snow. It just hasn't been a problem.
Deep wet snow 'should' be a problem.
Sending max heat to the windshield should melt most of the fresh falling snow before it can accumulate. The heater is great!
And on the rare occasion that a huge dump of heavy wet snow is happening while your driving then stop and clear it off!! Cheers and think snow.
Right now we have 8 cm of snow on the ground and more coming tonight!