They are usually strict with first time females, especially if it is a visit/tourist visa. I am not quite sure about males. I think as long as he have all the legal/right documents and is confident during the interview, he's good to go. That includes your original marriage cert, his and your birth certs, affidavit of support, both of your passport copies, your work and QID, invitation letter, visa, your salary and company details, and all the other related documents. He should also know the details about you and your work and address here, and the purpose of his visit. He should also be consistent and confident with his answers, and if he is under visit visa, he should not state that he has intentions to work here. Have two folders, one for the original documents, and one for the photocopies. I hope this would help! :))