Yes I completely understand the lieu dit aspect of these. But you are right to

Yes I completely understand the lieu dit aspect of these. But you are right to remind me they are not 'second' wines.
But Cubillo is a site as well and it's recommended (by LdH) for earlier drinking not long term keeping.
And the Gravonia is aged in the barrel/bodega for less time as well.

I'm not doubting for a moment your suggestion of how long they will age, merely registering my own ignorance!