Do you have a safe place to leave it at home? I have an exxy engagement and wedding ring too and I think I would leave mine hidden in a safe spot at home. If you're going to be backpacking and staying in backpackers hostels etc, it might not be as safe as staying in hotels where you could lock it in the hotel safe if you needed to. I'd be absolutely gutted if I lost it whilst travelling. Maybe you could get a cheapie ring to wear while you're away?