In Pixyz Review, you can import Point Clouds files (.e57, .pts, .rcp ...) just by a drag&drop or with an "Import 3D Model"

Point Clouds are displayed only with "Wire + Shaded" rendering mode, but when importing them, Pixyz Review forces automatically this mode. 

They are automatically voxelised in order to gain performance while reviewing them closely. Voxelisation will cut your Point Clouds object in 10x10x10 parts.