Well, for the last couple days, I've been in our Atlanta office, nerding out on flight information. And here in Atlanta, Mercury is quite angular.
I was curious to see how I would feel here. Especially since--as virgo as I am--my Mercury is mostly unaspected (Jupiter sextile) and background.
On paper, I would say I am now at "Peak Mercury"
I am a little bit fidgety. Not pronounced. I actually feel pretty calm.
I expected to be talkative, but I'm not. In fact, I feel conspicuously quiet. Like I'm more interested in listening. I just have this weird sensation like I don't have much to add. People's words seem in line with what I'd say. And people seem to be asking my opinion a lot, and listening to what I do have to say.
It's very odd.

Conclusion: angular Mercury makes for a good setting for learning/education.