Zumo 660 and Junction View


I have a couple friends with new Zumo 660s. Does the 660 use full-screen or split screen Junction Views and if full screen, do map updates to them receive the large JCV by default? If not, does the large jcv work well on the 660?

I think the 660 is a 4GB device so if useable, the large jcv would need to go on a SD card--the /garmin/jcv folder?

I'd hate to see them biking down the road with few JVs being displayed.