Ed, A small correction to your remark below. Although often said the way you did for shorthand, it is not really the case that a Sport Pilot flies "without a medical" -- just without a 3d class medical. A valid state drivers license serves as the Sport Pilot's required medical. Thus, if your state decides you are no longer fit to drive (e.g. poor eyesight), and pulls your drivers license, you cannot continue to operate under the Sport Pilot Rule. I believe this to be true whether your certificate is Sport Pilot, or it is PP and you choose to operate under SP Rule.
Linda N3437H (Sky Sprite) L.A. Ed wrote: "The second question comes in here. A D or later model is not eligible to fly as a Light Sport Aircraft, flown by a Sport Pilot acting as pilot in command (or a PP without a medical)."
