I think people are misinterpreting your question. It sounds like your son is showing interest in potty trainging and you would just like to encourage him to use the potty instead of the floor. Sounds fair!
With my son, we taught him what a potty was for by sitting him on it with me sitting in front of him doing activities with him. We sang songs, read his favorite books, played with his toys, until he peed on his own. Then it was party time! Singing, Yay! Peepees in the potty, peepees in the potty! Then he got m&ms and we did it again a bit later. Made it fun for him. After he "got it" we backed off entirely and waited until he started showing interest again. every once in a while I'd ask if he wanted to do peepees in the potty, he'd say no, and I'd cheerfully say ok and let it go. Just so that he'd remember what it's for. Boys seem to go through cycles of interest in potty training.
Anyway, he just turned two and on occassion asks for the potty. He'll walk into the bathroom and say peepees. We have a potty chair and a Bjorn training seat that we can pop onto the toilet, and he will watch himself pee and ask for a chocolate. Afterwards we put a sticker onto his potty chair.
Your husband should let him in the bathroom when've goes (both 1&2) and there is nothing wrong with him seeing you use the toilet too. My son asked to use the potty when he heard me say that mommie was going peepees on the toilet. It's perfectly fine, you are doing a great job, keep it up!