Yes,yes, and yes. My husband sounds like yours. When my son, at two wasn't talking, ( after months of asking my hubby what he thought, and he just said to let him be, he is fine,etc) I had him evaluated. My husband was upset about it, but his own mother, a teacher, was the one who advised me to get the evaluation in the first place. He also didn't buy the whole speech and language delay. He says that he knows his son, etc. Anyways, when we came in for the evaluation findings, he showed more of a concern. He now is our sons biggest advocate, and also makes sure he isn't labeled, nor treated any differently. He is still cautious with all of our sons therapists, however, has gained more of an appreciation for them, and has seen their commitment to our son. My son is now a confident, vibrant, happy, and talkative 7 year old. Of course, my husband says it is because of his excellent parenting skills. But we both know that we couldn't have done this by ourselves.
When my mother in law came to me, and told me her concerns, I told her about her own sons reservations. She told me that sometimes mothers have to do take charge, and that I know my child more then anyone else. I grew him inside of me, and gave birth to him. No one else can say that, and I should go with my own instincts. Your husband will eventually understand and respect your decision. Mine did.