I dont want him to believe I am wearing it or asking him to go with me to cover up the embarrassment of it all, I am proud/no longer frightened to say that I am fighting for my marriage, that I have made a lot of mistakes and Im trying to change for the better for me and hopefully to win H's love back. I just think that a funeral is totally the wrong place to make a statement about us
So Rabbit, in your explanation I think you have provided the answer. You are going to the funeral to honour your friend. It's not about you or H. It's about your friend.
You want H there for him, not to cover embarassment or fear. Whether you're wearing a ring is really immaterial then. The fact that you two are there as a couple is the primary consideration. Rings are only a secondary issue. It's probably too early for such a discussion so you make the decision and put them back on unannounced or leave them off. If you put them on and H questions it, you can simply say "Let's talk about it after the funeral" At this stage, I would be inclined to leave them off. The statement to others is there in the fact that you are at the funeral together.