Mark1234 It's a JAR-OPS (or Jar FCL) requirement that you have a sticker, how you get that sticker is up to the instructor to satisfy himself that you're competent to fly a tailwheel aircraft, it's hardly a big deal
Mark 1, that's completely incorrect
The list of differences that require training as per LASORS 2010 is as follows.
VP prop,
retractable undercarriage
Turbo/Supercharged Engines
Cabin Pressurisation
Tail-Wheel
EFIS
Single Lever Power Control.
There's absolutely no need for differences training (which would necessitate a sticker in your logbook) on a nose-wheel aircraft. Although it would have been prudent for your flying club/syndicate to insist on some instructor time before flying an unfamiliar type.
Incidentally anyone that doesn't have a sticker should get one