In my own opinion YES. A person's sexual orientation does/should not affect their beliefs, judgment, or faith. God did say 'Love your neighbor as you love thyself' not 'Love your STRAIGHT neighbor as you love thyself'. Being gay, straight, black, white, brown, or whatever is irrelevant when it comes to your faith and belief in God. So yes, job as a preacher should be based on your strength, faith, and belief in the religion, NOT of your sexual orientation.