I got my letter and documents back today.
FINAL TIMELINE:
1. Type of application: Tier 2 - in-country skilled sponsored
2. If switching, category changing (switching) from: Tier 4 - PhD
3. Date of expiry of current leave: 2015
4. Number of dependants applying at same time: 0
5. Date application posted: Online entry on 6/3/2013
6. Date application received at UKBA: Documents received 8/3/2013
7. Date payment debited: 6/3/2013
8. Payment mode: Online (debit card)
9. Acknowledgement letter received: N/A
10. Biometric letter received: 22/3/2013
11. Date of biometrics enrolment: 26/3/2013
12. Date of approval: 24/4/2013
13. Date of return of passport and other documents: 1/5/2013
14. Date (new) leave to remain valid from: 24/4/2013
15. Date BRP received: 26/4/2013
Switching Tier 4 to Tier 2 took one month exactly from my registering biometrics to receiving the BRP. That's me sorted for the next three years...until I need to renew and will be right back to step 1!
Good luck to everyone here. Hoping the best for you.