Scott, I also just purchased ML surround system with the Script i's for the rear channels. Haven't taken delivery yet but when dealer came to house for pre-install look/see they also mentioned the upside down installation option. Let us know how you decide to go and feedback on the sound...
I heard the ML setup I am buying driven by the McIntosh gear and the HT experience was truely amazing. Powerful, spacious, and articulate. When they demoed the attack on Pearl Harbor from the DVD of the same name the detail was outstanding, distinct individual airplanes with subtle nuances...
I'm soon to be a new ML owner. Pulling the plug on Home Theater System built around Sumits with Stage, a pair of Script i's, and most likely a Depth i. My local dealer offers both Classe and McIntosh electronics. Need opinions/experience with either or both. I've listen to both sets of gear...