I use the shoulder belt as well. just a bit over cautious I guess....

belt and suspenders...

The VX has proven to be an amazingly easy vehicle to have a car seat in. In some cases easier than my wife's four door sedan. When my Son was in a "pumkin seat" I would leave the left seat folded forward and just slide him in and over and clip-clip...safe and sound. Now that he is in a convertible "big boy" car seat....I have the car seat rear facing and just fold the seat backwards and load him in, then move the seat back to the upright position. Its been great. Not quite sure what I am going to do when he is forward facing, but I guess I will cross that bridge when I get to it.