Not so much about T/O and landing and getting an endorsement but TW types may have more noticeable adverse yaw in general flight compared to what most people are now used to.
(I figure because TWs tend to have powerful rudders to assist at low speeds with with take-off landing the designers figure, well the throttle jockeys have to know how to use their feet just to get airborne so let's save ourselves the bother about hiding adverse yaw, the pilot can look after that
).
The consequence in general flight of having noticeable adverse yaw and a nice powerful rudder is, yes you need to use rudder in turns to coordinate but you also need to be gentle and have good feel as it is easy to over do it. (I find initially people don't use rudder and it feels ugly until the light bulb goes off "oh! I need rudder!" and they start using big gobfulls of rudder and it feels ugly!)
I had one 777 captain tell me the hardest thing he found about tailwheels was doing a coordinated climbing turn to the left!