Yeah, I have ridden a classic Hanso and yes, the Touring does appear to turn a lot easier and follow the camber less. This also applies to the Touring versus the Vulcan 2000, which also has a 240 rear.
There are a couple of Touring guys who have moved across to a 205x60x16 and there are some photos on this link -
http://www.r3owners.net/dark-side/5409-gone-dark-pics.html
looks like it's not too different in handling. The photos certainly do put paid to the oft quoted myth that you have to ride over the "square edge" where the bottom meets the sidewall. I sure can't see a square edge on these. Maybe these guys have been looking at too many square truck tyres
I didn't phrase my last comment well. When I said I wasn't a good enough rider for a darkside ride, I meant that I wouldn't like to ride someone else's bike, regardless of tyre type "just in case". I didn't mean to indicate that you needed to be an brilliant rider to handle a car tyre, as that certainly doesn't appear to be the case.
Regards, Pete