Depends on the situation........ If I'm in either of the trucks I only use it to pass.
If I'm on the bike I will only ride in the left or right lanes, if you see me in any of the middle lanes I wont be there for long.
I always keep "an out" because there are too many self-centered drivers that don't look around before they change lanes.
I like having a shoulder to hit if I need to move quick, granted my Sporty will pass if there is enough space in front of them to blow by.
Also like being able to run the shoulder in bumper to bumper stopped traffic. Legal in Texas as long as your scooter is AIR COOLED and you are at a safe speed. When on the shoulder I usually run about 20mph because there it always one idiot that will try to move over and block the lane.