Yep easy to use.
However - someone new to the HI line might find it slightly easier to navigate the old system because you get to see everything sort of together.
One possible addition - take a composite picture with multiple (similar) khuks, each clearly labeled with the type. For example, put all the 16-18 inch khuks together. That way, people can start to get a feel for the differences, and know what the heck a "sirupati" is before they use the individual tabs to order something. Maybe we could do this at the khonvention. Or perhaps Pen's comprehensive line drawings could be added to the site.
YMMV