Originally Posted by
davester
Generally, adjustments are made by changing the stem for height or reach adjustments, or by changing the bars themselves to adjust the sweep angle.
Swept "flat bars" can often be rotated in the stem for pretty substantial adjustment of hand position.
To the OP, the second bar will allow you to rotate the handlebar to change your hand position without substantially changing your hand locations. The first bar's grips will change location if the bar is rotated.