Re my comment above about fat, the first bit below is from Wikipedia, not known for it's accuracy but the second bit is from the Old Spot Breeders Club.
Going on from Hilarysmums comment about bacon from a 7 month old GOS, different breed I know but my advice from the breeder of my two Saddlebacks is that the will be more 9 months if I want them to go for bacon.
The Old Spots has often been referred to as a "bacon" pig, due to the significant depth of body that provides a larger percentage of bacon per hundredweight of carcass. They often carry more fat than breeds that are more popular commercially.
Old Spots tend to be very calm, good-natured animals, another trait that makes them desirable to homesteaders and small farmers.
The GOS does have a distinct layer of backfat and marbling within the meat. That layer of backfat means that it is hardy enough for outdoor production but it also means that when the meat is cooking, it is being basted in its own fat making the meat succulent and full of flavour.
Perhaps we should bear in mind that our pigs are our pigs and will not be the same as everyone else's. Similar but not the same.