I have bred heifers to Net Worth before. I've never had any problems. Keep in mind that I was only breeding Purebred Angus heifers. On a crossbred, especially anything Simmental or Charolais, there would be a higher probability of issues. Use at your own discretion I guess...
I will say that the sexed semen is probably worth a try. We have about 50 daughters of Net Worth in production and they are all awesome cows. Docility is my only issue with them.