I have one that is drilled 4.5 from my PAP, pin down and CG a 45 degrees. Similar to the Brunswick Advanced asymmetrical drilling on their web site. The result...very clean through the front and strong move on the backend. It ends up being a hybrid reactive, it does not overreact. In terms of what brunswick ball does it remind me of...I agree with the bruiser comparison. But, feel that mine rolls closer to my Monster SmashR and my Red Fuze. My SmashR is drill label leverage, is sanded to 320 sand paper with a heavy coat of high gloss polish. The SmashR is earlier than the Sidewinder but, the look of both balls is similar overall. If you have a chance to pick one up, I would not hesitate. I grabbed one when I watched a friend's ball. If I could make a suggestion to Brunswick, I would say this is a very lucky mistake. I would change the colors and name and market it in the link as a reactive hybrid.
Fran