It works well for the bits that are annotated, yes, because the scan stops "scrolling" at that point even if you scroll. Problem happens when you're interested in something they haven't annotated.
not sure if its the same for you, but for me each arrow up/down is equivalent to about 15-20 scrollwheel notches of my mouse, which is enough to see the other parts.
I'n on a 2020 MacBook Air with the defaults for scrolling. When using the keyboard, each press of an arrow key moved the scan nearly to the next annotation. There was no way to see the parts in between.
