To be sure my ride on the Schwalbe Big Apples really was as good as I thought, I needed a second ride. The experience today turned out to be just as good as yesterday. The trike rolls smoothly downhills and surprisingly up too! Though I have I yet to test turning at high speeds, the response time continues to be immediate at even low speeds on the flats. No lag time whatsoever.
I can't wait until San Francisco's Sunday Streets event coming up in a few days.