I got my speedwork done! Did 1 mile warmup, then 6 x 1/2 mile at 9:15 mile pace with .2 recovery between. First 4 felt pretty good, 5th was ok, 6th was a real challenge to maintain form but I got it done... I was sweating like a pig, I must say.
Wore my semi-new Brooks again, and I'm not 100% sure I'm loving them. The fit's not quite as good for me as my Sauconys. Not going to chuck them out, but I don't see wearing them for long runs.