The LV Class feature has some nice control and privacy aspects compared to the age-old method of simply passing around a TypeDef'd Cluster. More specifically, I like how the Class data cannot be unbundled outside of the Class VI members. Here is an attempt to measure the extra overhead associated with the LV Class. Basically I just measured how long it took to perform 100,000 write-read cyles on a single member of the data type. This test was repeated for both the 'Cluster' and Class method.