^No, the Vulcan family name is generally assumed to come before the given name, as in Asian naming order (see the examples in KingDaniel's post above). Which makes sense in a society that values family/clan ties so highly.
It could be that Vulcan family names are extremely long and complicated, indicating multiple generations of lineage or elaborate clan interrelations, so the pronunciation difficulty is more due to the length and intricacy than due to the phonemes involved.
It could be that Vulcan family names are extremely long and complicated, indicating multiple generations of lineage or elaborate clan interrelations, so the pronunciation difficulty is more due to the length and intricacy than due to the phonemes involved.