yes but with down shifts as a opposed to up shifts... being off the throttle a bit longer to shift doesn't hurt you. cause your brake'n anyhow. where as on acceleration that extra .5 seconds can really hurt your exceleration and be the diffrence of 1000 RPM's...
or that's what I ASSUME... I've not tried GP shift other than a short ride on Cutty's SV650... and there it was a straight shot and I was too busy trying to see with his shitty lights!