Exactly. In either case there's nearly 30 years of libraries to learn to be effective on Apple platforms. (Significant traces of work done at NeXT remain, which started in the mid-80s, I believe.) The language itself is the least of your worries.

That said, I am excited about Swift because the hardest part of teaching new developers to work on Apple platforms is the fact that you need to understand C to write Objective-C.

I invite you to try this with Common Lisp or Haskell.