As I recall, Views only support optimistic row 3 and table 5 buffering.
If using table buffering set multilocks on.

>>Have a form that uses two views. The form is set for 'BufferMode=1' (Pessimistic). The cancel button simply selects view1 and then issues tablerevert(), then selects view2 and then tablerevert().
>>The changes remain and don't revert back to original value. What am I doing wrong?
>
>What is the buffering of the underlying tables? Is the data changing but not being reflected in the form, possibly?