This kind of 'subject specific search tool' (where it detects the nature of your search and presents specialised search boxes has some major SEO implications:
- Such tools are increasing, by gradual experimentation from Google.
- Such 'enhancements' only deliver paid listings.
- In my opinion this and other tools on the way, are set to quietly replace the free SERP.
I don't blame them, its what I would do if I ran Google. But the future is bleak for free / low-cost findability.
(It seems to work only for the US, BTW. I don't see it come up with my Canadian IP address.)
I don't know what you mean by "any results were from Adwords only", but the results I see are from the Jobs section of Google Base...those job listings are indexed separately from the SERPs and AdWords ads.