I'm sure you'll love that experience. I'll always remember my first aerobatics flight. At the time I was just a Cessna 150 private pilot, and I had the incredible opportunity to fly on the backseat of an Alphajet.
The pilot began with a low level cross country flight, and ended with aerobatics. That was awesome. I didn't understand anything though. We did rolls, loops, Cuban eights, etc...
Goboeing: so you have Cap-10's in the US? That's the aircraft I got my aerobatics rating with; a very nice aircraft IMO, but pretty hard to land! The worst thing I underwent was an inverted loop. We pushed minus 3g's; felt like my eyes would pop out of my head!
Since then, I've flown aerobatics on my own in Embraer Tucano's and Dassault Alphajets. Starlionsblue's right: military aerobatics are somehow smoother than civil aerobatics, and you avoid negative g's, since you never really need them and they're not comfortable.
I've never flown an open cockpit aircraft, and I think that must be an awesome experience when you're upside down, and see nothing between you and the ground. I suppose I'd double-check my harness...
Have fun, DeltaDM11, and come back in July with a nice story!