You're right, Berkshire, this thread was born almost a year ago when the VL BB was beginning delivery - an oldie but goodie.
When this question was posed back then, I had both an 072 loop and an 060 loop so I tried it out. The VL BB will run on 060 but it looks stupid (best word I could think of). Forget about 060 switches. Also the cab apron needs to be down. It is listed as 072 for good reasons.