Using Link to Post 1.0.2 and when I publish the links are not showing up as I have styled them in Atahualpa 3.3.3. Links created with the default link creator in a post or page ARE correctly styled.
Link to Post picks up the underlining when hovering, but not the color that links are supposed to have in their default state -- in my case, regular text is black and links are red. When hovering over a link, it adds a red underline. With the links I've created in Link to Post, the link text is black in its default state, but the red underline is there if you hover.
Obviously, this is a big problem because if a reader doesn't have some visual clue that a bit of text is actually a link, they're not going to click it.
My website is The Boat Galley, but I don't know that you're going to see it in action because the problem is that you can't see it.