Update: 12 hours ago UPS delivered my Tier 1 visa!
That brings the final timeline to:
Oct. 24 - Visa application material UPS'd to Chicago consulate
Oct. 28 - Received email saying they had my application
Nov. 17 - Mailed a letter to the "Visa Section Manager" asking about the status of my application
Nov. 20 - Got a very polite call from the visa section saying they were waiting on "one more check"
Dec. 4 - Received email saying I'd been approved
Dec. 5 - My passport and documents arrived at my home via UPS
Dec. 9 - Me on a flight to sunny Glasgow.

I'm doing the Happy Dance for you!
I too will be going through the Tier 1 General process after Christmas. Before you jet off to Scotland, can you please share with us anything your visa says about when you/should enter the UK? Or any or instructions or suggestions it notices.
I ask because there's been much discussion and hand-wringing about time limits for initial entry and such because we've had no input on results from Tier 1 applicants this side of the pond.
It'd be nice to know what to expect. Anything you can share would be much appreciated!
Again, congratulations!