I've been playing around in the outer solar system lately, so I've been looking to add some bases to the moons and make some visual improvements where possible. This Europa texture does offer a bit of an improvement even in Orbiter 2010 P1.
Compare these two images. Notice how the original sphere makes Europa have an angular horizon whereas the add-on texture gives the horizon a much smoother curve. At this distance, the add-on texture also has more detail.
Original:
Add-on:
When you're viewing from further out, there isn't much difference. And you could argue that the colors in the original texture file are more appealing. I'm not sure which color is more accurate.
Original (has more of a sandy color):
Add-on (appears more white):