Are those pressures specifically for the GS? They look like the pressure almost every Jap bike has on 17" 120 & 180-190. I've just put some Roadsmarts on and they feel fine to me on 2.2/2.5. Temp feels ok for a touring tyre too.
I echo the other comments. Feels much more secure, holds a line better, less reaction to bumps / drain covers. Generally feel much more locked in during cornering.