it's not at all useful. all you get is some stack-tace-like thing without any of what you actually want to see. like req/resp headers and body, params, inline json/html decoding based on response type. chrome lags here by a large margin.
2. Click on the request that was just highlighted for you in the Net panel
3. See headers right away, or click Response to see raw response or Preview to see those rendered nicely
4. Click console again to return
and then...
5. Oh wait, want to see something in the headers
6. Go to the Net panel, still there for you
It's a different workflow and it's probably annoying to you since you're not used to it, but "it's not at all useful" is edging past hyperbolic. Personally I feel like a clumsy idiot when I go back to Firebug, even though I used to live in it and once knew every quirk. I think that's just the way of developer tools.