I don't detail either except for a very occasional window where I mess up a bit. The exception, for me, is dirty first cleans. On a maintenance clean I avoid detailing by not soaping up to the very edges. If I were to do that on a dirty first clean, it could leave some dirt marks along the edges. I don't dog ear the squeegee channel either but I do make sure that the rubber is in good condition (corners not rounded) and that it is cut almost flush to the ends of the channel.
Sorry to get sucked into the bit that isn't about Ionics rubbers. No, I don't remember them.