Yet Another Partition Question (sorry), mostly about High Partition.
I'm currently under regular Partition (middle option), and have a kingdom, 3 duchies, 2 counties in my capital duchy, and five sons. The split right now is my primary heir gets my one kingdom; then the three duchies get split with the primary heir getting the capital duchy, and second and third sons getting one each; then fourth son gets the second county of my capital duchy; and there's nothing left for fifth son. This all makes sense to me.
What would happen if I switched to High Partition (plausibly researchable in my current character's lifetime)? My naive understanding from the wiki is that it would be as if I had two heirs, so primary heir would get the kingdom; then the duchies go capital duchy to primary heir and the other two duchies to the other blob of heirs, presumably one each for second and third sons. Since the other blob of heirs was "satisfied" with duchies, my capital duchy wouldn't split up and fourth and fifth sons would get nothing. Is this correct?
As a bonus question, should I care that much? On succession I would probably be able to fabricate on fourth son and get my capital duchy back intact, but only holding one county makes me nervous.