"Subnotebook accurately describes what it is but has the added benefit of being immediately understood."

Correct on the first part, incorrect on the second. You may be too close to the technology, but Average Joe (plumber or not) would respond with a blank stare if asked about a "subnotebook".

What, is that the part underneath the regular notebook?

I think the obvious solution to this, should they actually have a legal basis, is to require that only NON-scientologists can be employed at a company.

After all, if the 1st amendment protects religious requirements for employment, isn't the inverse true as well?

Perhaps this isn't a road they should go down...