I love the oil drain valves, I converted several trucks to them at my last job. They are very common to find on class 8 trucks, these particular trucks were heavy haul and got a full service every 10k. I never once heard of any problems with one of these valves, but if you're paranoid get one with a lever you have to move to open.
In the case of the OP, the hose is probably in the trunk.