I have a full motorcycle endorsement... since the late 90s. But we don't have to display "L" plates in the US. We go, take a written test, they give us a learner permit. There aren't any cc restrictions... only caveats are no riding at night, no riding with passengers, and no riding on the highways. Then once you're comfortable riding (within 180 days or something) you can take the skills test and get your endorsement (if you pass).
I went a little different route and took the STAR (skills training advantage for riders) course because I had only ever been a pillion rider or ridden off road. Even after I got my endorsement I stuck to off road, but now I am comfortable with my skills (at least with the little bikes) and enjoy street riding.
It is quite similar to the FS1-Es, but it's not. I think the fizzy is a 50cc moped... mine's just a US model 80cc, no ped. ??