Although I am very fond of this plant for its numerous bright blue berries at this time of the year; it is a bit of a thug once it starts spreading by its far reaching runners. They come up some way from the main clump; often amongst something else. In my case usually the larger irises. I aim to move it this autumn but wonder what its behaviour is going to be on a slope of ~1 in 4. Will it go all ways, up, down and sideways of will the slope confuse it? Will it have a preference for any particular direction on a slope? The slope faces west. Heavy stoney chalky soil.