I took mine on a motorcycle with no option to have a scooter, but if given I would have taken the motorcycle. I wanted to feel like I really did earn my motorcycle license and was not given an easier option, even though I only wanted to own and ride a scooter. Gear changing wasn't that hard once you get used to the clutch and throttle ratios. Also, get into second gear as soon as possible. The bike will ride and respond better when doing any kind of obstacle.
If you can deal with operating a motorcycle in controlled stress situations, using a scooter will be much easier. I never liked have motorcyclist looking down at me for just have a scooter, until I tell them that i earned my license on a motorcycle as well. I'm no different than them. Legally my bike is a motorcycle. It just has a step-through design and an automatic transmission.
Good luck on your test and I hope you passes regardless of your ride.
-Wolf