Does the Apple Watch with 1.01 work with iOS9? Or would I need to upgrade watchOS to 2.0?
If it works 1.01 with iOS9 how's it working out?
Do NOT upgrade your watch to 2.0. You will be stuck like the rest of us. You can't downgrade back to 1.0.1 and are forced to be on iOS 9 because it doesn't work with iOS 8.3.
iOS 9 changes are mostly under the hood stability stuff, there is no reason to jump into it early. WatchOS 2.0 is a mess right now
This doesn't really answer the OP's question. They want to know if they can upgrade their iDevice to iOS 9 and leave their Apple Watch on 1.01.
I've heard of at least one person downgrading back to iOS 8.4 beta 4, so that's not exactly true.
You're telling me iOS 8.4 beta 4 works with Watch 2.0?
No, I'm not. And I don't believe it does. I'm saying that if the OP were to upgrade to iOS 9 on their iDevice (iPhone, iPad, iPod touch), there's the possibility they could downgrade it back to iOS 8. Their whole concern is wanting to upgrade their iDevice without upgrading their Apple Watch.
Yes I understand that. I'm thinking one more step ahead. The OP would be tempted to upgrade his watch to 2.0 also and I'm trying to warn him about that ahead of time.