I have to agree that a different type of medication may be in order. I wouldn't want to dope him either but other medications are available. You can't have him attacking you and going at your face is a bad thing. You could be seriously injured even though Cubby may not mean to.
I would talk to your vet about trying something new and a low dosage. There are times when you just don't have a choice. I know this because of Mr. Magoo. I didn't want to medicate him either but life has been better for him and me since we did. He is calmer which makes me calmer and we get along so much better. I hope you will consider this because Cubby has to be stressing too. With the right medication he won't be so stressed and feel the *need*. He will be happier and so will you.