Jon,
Tinman has an example of a BW plan on his website
www.therunzone.com in the article entitled Rules for Multiples (one can now only see these articles if one logs in) that shows 1 BW during the week and using the long run as the other BW. The example shows MON - 4-5 miles slow, TUE - 8-10 miles with 6 x 30 seconds at 5k pace with 90 seconds rest in between, WED - 16 miles with 6 x 3 minutes at 5-10k pace jog 2 minutes in between, THUR - 4-5 miles slow, FRI - 8-10 miles with 8 x 20 seconds at 3k pace jog 40 seconds in between, SAT - 16-17 miles alternating 1 easy mile and 1 MGP mile, SUN - 4-5 miles slow. The following week is very similar except the WED BW run is 12 miles with 6 x 1 miles @ Half Marathon Pace with 1 min jog in between, and SAT 20 miles with 5 cycles of 4 miles easy and 1 mile at MGP.
This seems more reasonable than 2 BWs per week and a long run - I don't think my body could handle the examples that Paul posted in the entry that you reference above. I did notice Tinman's other article entitled Marathon Training has various BW examples for elite runners, club runners, etc. Obviously BW's should be customized to a runner's current ability and fitness. I do like the idea of running MGP miles during the long run.
Here is his explanation for the above schedule: (Hopefully I won't get in trouble for posting!)
"Jessica is a 37 minute 10k runner who decides to train for a marathon race. Since she lives in Dayton, Ohio, and she decides to run the Columbus Marathon in four months. She’s been running 60 miles per week and racing 10ks during the last few months. At first, she plans to run 80-100 miles per week in preparation for the marathon. After asking for my consultation via email, she changes her mind about her weekly mileage. I tell her that 60-70 miles per week is appropriate for her ability and background. Further, I tell her that doing Big Workouts (longer runs with faster portions included) is the best way to prepare for marathons. She asks me to coach her – and the journey begins.
Below is an chart showing Jessica’s first month of scheduled workouts." Tinman
The example that I posted in the first paragraph is from the chart.