Keeping it simple here. You essentially replace the rudder with the ailerons, same actions occure via. your input, yet the ailerons are going to make it a little more difinitiave in response. Technically, a tail feather controlled only plane is a bit harder to fly because it's waging the tail around, making the wings change pitch where an aileron control plane simply moves the wings directly so there is no micro hesitation when it comes down to it and there are plenty of new pilots that can and should ommit rudder control in favor of ailerons very early on, if not from the beginning, given the ailerons throws and surface area are scaled down to noob style specs.

You are still flying exactly the same as you were before, in a nutshell, no need to relearn the controls at all, but adding the rudder into it after the fact, moving it onto the left stick really is only used very rarely by most pilots in the general arena and in fact, most of my planes have the rudder disabled for that very reason.

3d planes, they beg for as much control surfaces and options as possible, so yeah, they keep the rudder in place, they also have larger control surface areas and *****g out the throws is invaluable since they are geared towards hovering type manuevers which require alot of input in the sticks to maintain control, similar to a helicopter.