Hi Frank, nice to see you here
It's a good question, and to be honest I'm not sure if they are the same. Kipili has in past been a catch all name (and it still is to a certain degree) for fishes caught not only at Kipili, but also on the nearby islands. An example of this is the neonstripe Ophthalmotilapia boops that were imported under the name of "Kipili" - we now know that this variant are only found at the nearby island of Nkondwe. There are also some rather extreme examples: e.g. Petrochromis sp. "Giant" were initially reported from "an island somewhere south of Kipili" - it turned out that this locality was Fulwe Rocks, 60 km's from Kipili!
Back to your question: it's quite possible that the nasuta labelled "Kipili" are caught at the nearby island of Ulwile, but I'm not certain. Maybe Mark, Philippe or Enrico can be more precise. I have only kept the one labelled Kipili, and have not seen the Ulwile at first hand, but the latter seems to be a bit more orange on photos (which could be explained by different feeding etc.).
Do you keep both at the moment? If you do, have you noticed any differences?
All the best, Thomas