Just installed my Keystones...
WOW... I knew they were going to be good, but this is ridiculous. sjtalon was absolutely right, the bridge pickup is not at all harsh in any way. These were exactly what I was looking for. They still retain a traditional telecaster tone, but with a lot more depth. I set the height based on Bill's nickle measurements and they sound so good that I don't even want to experiment with different heights. The only issue I had installing them, besides the fact that I'm terrible with a soldering iron, was that the neck pickup was too tall to mount to the body of my highway 1, so I drilled my pickguard and mounted them that way, which worked out perfect anyway.
Something i haven't seen on this forum much is how wonderful they sound overdriven as well. I plugged them into my POD at church with my Xotic AC Booster and they just sounded amazing. I don't even know what else to say, so I'll stop rambling.. Bill Lawrence has another customer for life thanks to TDPRI!