Yeah, almost all the enhancements are in the ".net upgrades". But I suggest you to go 1.0.1, I tried to keep my lovely 0023 but at the end, all new libraries are coming for the 1.0 
so it is like "upgrade or die"
Anyway, my modded version does not shares anything with your 0022, just set another Arduino folder in the options and you are ready to go! I have the 2 ones installed right now, no conflicts, no shared Sketches or libraries.