My take on most of the G70 rock styles for live is... get rid of the Rock kits. Makeup Tool them so they use the regular V-Drum Pop kit. All that extra oomph from the ambient rock kits just blurs the sound live (where you actually have a real room to add ambience), and the styles sound more dynamic with the crisper V-Pop1 kit (IMO).

Secondly, take a look at my Tip and Trick at roland-arranger for adding an MFX effect to style tracks (basically, you loop the Direct outs back into the IFX inputs) and add a nice amp to cleaner rhythm guitar parts, rather than using the sampled rock guitars. Quite a bit more dynamic, especially when using the Dynamic Arranger feature to vary their dynamics... They can make a pretty good rhythm guitarist if your guitarist plays lead...

Once you try adding the IFX to whatever style part you want, it opens a world of newer sounds to the style palate..