I've played with them before, and in my experience, you undo a lot of the "look" that the presets create while you are fixing things with Damien's workflow (removing clipping, adjusting white balance etc).
We've seen this before. Let me see if i can pull up the old posts about it. In the mean time, can you fill this out? http://www.damiensymonds.com.au/thread1.html
All photos require some degree of noise reduction. that's not uncommon at all. But if you can post some examples like so, we can let you know if you're experiencing an unusual amount of noise:
http://www.damiensymonds.net/2013/09/grabbing-700x700px-100-crop.html
Are you 100% sure that you have a wide gamut monitor and not just a wide screen monitor? (You'd be surprised how often people mix those up) A link to the monitor specs would be helpful too.
What about your test prints? How do they compare to what you see on your monitor?
I'm not sure I understand your question? The orange carrots, in particular, look duller in the bottom photo when soft proofing is turned on. Is that what you mean?
Yep, that would make a difference. It's the raw processor (ACR) that sets the color space. So if your work computer was not set to sRGB that would change how it processes your file.
It won't affect the actual editing in this case, but it does present a probably when sharing your images online. Images in AdobeRGB can appear green/grey when viewed online. And it would really suck to do all the hard work on this, just to find out the profile was wrong and that you would have to start over etc.
I'm really puzzled why it saved as AdobeRGB though! I don't have a Mac so I don't know what window that shortcut opens. Can you take a screenshot of that? I just want to make sure we aren't overlooking anything.