+6 -3 gives you scope to fly all the standard, and intermediate aerobatic figures. I am sure it will flick, but how heathly for this type of aircraft such a figure is, only time will tell. A fantastic touring aircraft that can swoop a few aero's on sunday, yes none better. Dedicated aero mount.....no, in my opinion of course.
As for the G loading, its not normally the aerobatics that overstress the airframe, but the recovery from bad aerobatics...................
Get trained.
RV are a fantastic series of aircraft that have done wonders for the homebuilt market, I am just glad Dick Van Grunsden was able to develop his designs in a regulatory system that worked with him, rather than against.