I am new to Mac, and I have my rough time (missing keys, wrong shortcuts and etc). But I don't give up. I am a JS developer with more than 10 years of Windows and Linux (Debian, Ubuntu) experience and I need another Chrome profile accessible on a demand. The easiest way for me is another icon in Dock (and on the desktop).
It is very easy in Windows - one just have to make shortcut and enter command line for chrome which looks like this:
For OS X I found command line is
open -a "Google Chrome" --args --profile-directory=Default
How to make a shortcut in Dock and on Desktop using it?
Please mind the subject (question), it is important for me, that shortcuts has to allow running multiple profiles simultaneously. I didn't stated it first time, because it was obvious for me it will work that way (Linux and Windows just do it).