Yeah I don’t see how that would happen, as HttpService is not a cloud service, but rather an api to reach http endpoints. So unless Roblox breaks HttpService, or the server loses connection (if that happens, then you have bigger troubles), I do not see that happening
I thought the same too, but wanted to make sure and see what everyone thinks.
My usage is to see if the data store failed to save an important value (player purchase, for example) and save it to a temporary database using HttpService until Roblox DataStore is back online.