I switched to Mac this year after 18 years of Windows. I agree with everything that Ralph said. There are lots of other things that I like about OS X vs Windows and only about 1 or 2 things that I miss from Windows. I could go on about dozens of productivity features, stability, and the value of all of the included software vs what you would have to pay extra for with Windows. But, you asked about AC....
For your specific question on AC - Expose on Mac is a big productivity improver for me. On Windows, you have to close/minimize or go to a menu to find and display hidden windows. On Mac, Expose instantly tiles your screen with open windows letting you choose what you want to switch to - plan, section, GDL, etc.
There are lots of OS X features that make one more productive IMHO. In Leopard (10.5) and ArchiCAD, one such feature is that the Help menu of every application - including ArchiCAD - includes a spotlight-like search which not only searches the entire menu hierarchy of the application- but even highlights the searched-for menu item. A single click does the action. So, if you can't remember where Align 3D Texture is - if you just type Align 3D, up pops the proper menu to tell you where it is (if you care) and a single click invokes the command.
One small change in the switch to Mac is that I did use function keys F8 through F12 (and variants) to do things inside AC under Windows. I prefer to keep the standard Mac OS global settings for those keys now, and so have redefined my shortcuts for those old tasks - only 3 of which I ever used much anyway.
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB