I am using Google Chrome version 22 on OS X 10.8. I use separate user profiles (created using the native Chrome facility in Settings->Users) for my "regular" web browsing, and the web development that I do. I launch my web development profile from the regular Chrome profile window by clicking on the avatar in the top-left-hand-corner:

At the moment both of these profiles share a single dock icon. However, I would much prefer for each Chrome profile to have its own dock icon, with the windows managed separately - and ideally for the dock icons to be distinguished in some way. Is this easily possible? By 'easy', I mean things like rebuilding Chrome from source are not an option I'll consider.
Note: I would like to use the same, stable, version of Chrome for both profiles. It would be OK to have the same version installed twice as long as they can be kept separate and the dock icon distinguished.