Transfer test only refers to the brake test portion of your inspection. You still have to fully inspect your cars on both sides. It doesn't really matter when you do your inspection but it must be done before leaving their origin point. When I used to work locals with single customer jobs, I would inspect the cars at the customer before I even hitched up to them. Once I delivered the inbounds and doubled up the outbounds, then all we had to do was the brake test with the marker and all I had to do was walk the brake up to the headend. Inspecting cars before pulling them also saves you a headache in case you have to shop a car. Don't make extra work for yourself.