I would be curious to know why you feel it is important to use personality testing. I have hired over 20 sales reps and I have never used any testing. I have conversations with my hires because that is going to tell me more about their personality any day than a test. Plus you might eliminate someone because of a test score that could be a great fit for your organization. I have a pretty strong process for hiring sales people and could share with you my steps and even the questions if you would like.