not a direct help for your OPT problem
but a general though about misconception
it has been caused by:

Much too often we speak - with our 
vendors and bosses and customers as well -
about backup requirements.

NOBODY HAS ANY BACKUP REQUIREMENTS,
WE ALL DO ONLY HAVE RESTORE REQUIREMENTS.

The backup is only a way to accomplish it,
backup is only a tool and maybe a method, 
but not our target.

If you happen to make your vendor understand this,
the chances are better he will not matter 
what name of backup - incremental or selective - you use.

regards
Juraj Salak