imo scream tail is way too passive in general, and in the niche of a screen setter, its outclassed by pult which is faster and has access to uturn, curse, will o, and massively better attacking stats if u want to run an attack on ur screen setter (usually ddarts or flamethrower). the only reason to run scream tail is for wish support, but even then alomomola is probably better because of its better typing + regenerator.