I suspect the happy ones in this thread have CVT and the less happy ones have manual.
Well, mine's a manual and I'm very happy with the Idle-Stop, I haven't even thought about turning it off and I can't think of circumstances when I would.
I'm not sure that's how the manual version restarts. I thought it restarted when you depressed the clutch pedal.
Correct. The engine stops when the car's stationary, you put the gear lever in neutral, and you lift the clutch (personally I always have the handbrake on then, but I don't know whether that's essential for the Idle-Stop to work). It restarts when you depress the clutch before engaging gear and moving off. So if you can see you're only going to be stopped briefly (eg T-junction or roundabout), you've either anticipated the traffic conditions correctly and can keep moving at low speed, or you're stopped with the brake on and you just keep your foot on the clutch so the engine doesn't stop and you're ready to move off smartly when the traffic allows. To me it's very natural, it really isn't a big deal, and there's no need to turn the system off.