When you use it, it really shouldn't be subtle.
Another thing... not really a huge fan of the rampant usage of two-hand tapping either. To me, getting in there and plucking the shit out of the note or gently plinking it has a lot more soul and character to it than all the mindless tapping that a lot of people are picking up again these days just for the wow-factor of it. It has almost no soul and emotion to it at all.
That's kinda what I don't like about a lot of these guitarist solo artists. They focus too much on what the lead guitar is doing and neglect to pay enough attention to what they could do to make the rest of the song better.