It is possible that the ride may be stiffer.
Sway bars basically connect the left wheel to the right wheel so that in a corner one wheel can "borrow" stiffness from the other to reduce body roll.
Therefore, in a situation (i.e. going over a bump) when there is a big difference in wheel position between left and right, you may actually feel the additional stiffness.
2011 E92 M3 DCT
1991 Spec Miata
2008 E92 M3 DCT
2008 E92 M3 6MT
2008 E92 335xi