Some information I've been able to figure out since this thread started:

1. Not all 200TW tires are made equaly fast or resiliant. There is a huge disparity between tires, we'll end up on one or other of the currently fast tires.
2. Rain competence is not inherent in the 200TW tires group. We will all need to have tires for rain and tires for dry.
3. Not all 200TW tires are compatible with cold weather. As cold weather compatibility is also not guaranteed the wet weather tires will likely be the only choice for cold weather driving.

The 2 or 3 brands that work in the warm and dry do last longer than 40TW tires, and grip to the very end, but after playing with the Hoosier R7's this year, I was able to race the R7's to the cords with proper maintenance (wrapping them, storing them in my basement between races) and got excellent results, 3 more cycles than last year.