Alison yes, psychometric personality tests don't really add much to recruitment and matching up new people into teams - I found them useful when having team-building days with specialist teams, to enable people to air their differences and identify how they could work more effectively with each other, but mainly they're fun to use and help people to understand what characteristics attract or repel each other.
I worked with one team because it was highly dysfunctional and in danger of being disbanded, and discovered they were well matched according to one commonly used test, and had complementary roles, but the testing doesn't allow for fluctuating mood on the days of the tests or individual experience when dealing with particular issues that haven't been resolved constructively.
I know one particular Gransnetter who would say it's all gobbledegook anyway, and in some cases I'm inclined to agree 