There's no MVC available for JI. But there's another kind of compression available by grouping the columns in select statement.
(col1,col2) , (col3,col4,col5)
so the index is compressed on col1,col2 (called the fixed portion, the values for other columns will be repeated). See the data definition manual for exact syntax and the design manual for the applications :-)
PPI comes in with 6.2 but you can't have both together.