The iPad is a very different use case than the Watch though. Cellular on an iPad essentially gives you all the functionality of an iPhone, with the form factor being the only limitation. The Watch on the other hand, offers very limited functionality and doesn't last long either, so it's definitely not for everyone. I'd say that the only valid situation of not having your phone with you is while running. I mean there are a few other cases but they are incredibly niche.This was my thought with the LTE iPads, and then I got my 9.7 iPad Pro with cellular, and I wondered why I bothered with non-cellular iPads before. Yes, my series one has been awesome for what it is, but I would also like to not have to carry my phone around sometimes too... so it would feel liberating to get LTE on my watch. On the cost side, I get a $10 discount for auto pay, so I consider the line I have to have to be a wash. Just have to pay taxes, which is minimal.