In SoCal, my IP has huge fruits -- not many as the grafted branches are still small but the fruits are as large as Keit, and they are the last to ripe. We just ate the last one on 12/2/2022. Firm texture, rich flavor and creamy in the mouth. The flesh color is pale yellow but don't let it fools you.
I found it's best to to clef graft for IP, as it grows faster than bark graft (like my coffin-grave graft).