False, Bowser has skills in coverage. It's the one thing he has going for him right now. Now, I don't know why don't use him at all along with Tim Williams(I never said Dean Pees was perfect... And Harbaugh makes a lot of questionable choices), but going back to his college tape Bowser was very developed in coverage. Hell, he's even flashed it in the pros. He'll be a stud if he develops more pass rushing moves..
Seriously, why don't we play those two more? Every time those two are on the field they make plays or apply pressure.