Unfortunately because of the "angle" of the rudders, moving them out or in simultaneously has the detrimental effect of pushing the nose up or down respectively in a difficult to control manner.

I modeled this in G3 and discovered that the behaviour of the real plane was no different.

Even when this is offset by adjusting the elevator, it's not all that useful.

What seems to work very well for everyone however is to utilize the flap switch to activate "spoilerons"...

That is hitting the flap switch causes both ailerons to move up about 1/4" or slightly more, while pushing the nose down a tad.

This makes the plane much easier to control at landing and makes nose up approaches easier.

The nose up landing not only looks very scale like, but it also tends to slow the plane down far more quickly than the rudders.

Think of those videos of an F-16 or F-22 landing and you'll get the idea.