Originally Posted by
DrakeWurrum
Infiltrator's Signet and Shadowstep do not regenerate your initiative or remove specifically movement-impairing conditions while simultaneously moving you a long distance away from enemies (assuming proper facing, which is easy to correct).
Yes, Shadowstep removes three (when you return back to the spot you were before, which may now be a dangerous spot to stand, and is counter-intuitive to the goal of running away), but they're a random three.
Infiltrator's Signet also moves you right beside your enemy, which may not always be ideal (again, can't use it to run away), while also removing your increased initiative generation. At least you can trait it to give you initiative and Might upon use, so it's a really good offensive option.
Not to say Shadowstep or the signet are bad choices, but there's trade-offs. One is not automatically superior to the other, and there's more to it than just cooldown.