Vlad
You can say design tastes are different which is true, but UX is deterministic.
This isn't actually true. A common misconception is that you can practice "UX Design". A User Experience is just that: what a user experiences.
That being said, there is two different types of interactions: Learned Behaviors vs Instinctive Behaviors. For an application that is used frequently, as a primary workflow, learned behaviors are equally as acceptable as instinctive behaviors. In the case of Apple, iOS has evolved over time to heavily rely on Learned Behaviors in their interface which actually results in a better user experience.
Keybindings / Shortcuts are an excellent example of a Learned Behavior that improve the user experience, and I believe you would be hard pressed to find a user of Orion that would want fewer shortcuts to accomplish routine tasks.
In the context of compact navigation such as the new Safari, we can look directly to shortcuts as to why this is an improved experience for many users.
I interact with my Address bar exclusively with CMD+L. When I am not actively viewing a page, the URL is not important to me, the page title is. When I am viewing a tab, I want to be sure that the URL I am visiting is indeed the accurate URL, and not a phishing attempt. The Apple implementation of compact tabs give both of these requirements perfectly, while limiting my vertical real estate usage. It is also always clear as to which tab the address bar is reflecting.
Since I interact with shortcuts, all that is import to me is clarity of the correct information when I need it. Cmd+Tab / Cmd+Shift+Tab changes my tabs. Moving tabs is not important, as I do not have to click them, nor would I want to. Moving address bars is not important for the same reason.
For a power user, the interface for the new Safari compact tabs provides the best possible user experience.
Now, it is important to remember that this interface will only perform well for users that have learned these behaviors. New users will have a more difficult time adopting this interface, but as interactions are learned, efficiency generally increases.
User Experience is subjective, and everyone will experience an application differently. Short AB Testing for Learned Behaviors will never display positive results, and thus, they are often thrown out by less experience designers and testers.
I hope to see a compact tab implementation in Orion, as it is the only thing preventing me from moving over to it, as the cleanliness and real-estate gained from Safari is too great to give up, and I do feel that the single unified UI element of "Address-In-Tab" is the best implementation for this concept, as otherwise, the benefits are lost almost immediately.