IMO one of the cool things about Wallet is the notification that appears on the homescreen when you're in proximity of the venue or time of the event and automatically displays the pass when tapped. I wonder if "create your own" will be able to do that (I'm not sure how it would)?
For one, the article doesn't suggest that this will indeed be allowed as a part of that process. OTOH: it's easy for a flight ticket pass (which has time and airport location) but not for a gym membership pass (time can be anything and the gym can have several locations.)
Location-based functionality like this is already widespread in iOS; I'd be surprised if it wasn't supported. Reminders and calendar events (and PassKit!) already have it, for example.
