He makes a good case for keeping a spare mac around (mini's are good for this) for those "unique" mac doings.

I keep all my Nikon photos as files. I once wanted to export all my photos from iPhoto. Well, guess what? They were stored in a tree structure by date. Maybe in a database these days. I found a way. (without spending a lot of time programming or scripting,)

Anything is possible!

I once worked for a company that was mac-only. Some genius decided to go all Windows. I found an add-on for outlook that saved messages as text and served them to and from a Sun workstation and a mac laptop, and read and composed mail there.

and by the way, as far as integration of messages and phone, whenever I get a phone call, every mac and ipad starts chiming, and it's a mad dash to find the phone. Yes, I have taken phone calls on the watch, Dick Tracy style, but I still feel weird about that.