Okay, it sounds like the answer is no for Aperion. It's not the weight I was worried about. I just presume that the sturdier the mount, the more precisely the woofer would move in response to the audio signal, thus resulting in better performance. I think the drywall mounting will be fine, but if there was another option I just wanted to know about it.
FYI, here are the kind of brackets I was thinking of:
http://www.outdoorspeakerdepot.com/prbrmebabo.html
http://www.4electronicwarehouse.com/products/boston-acoustics/ncbr8.html?id=15983&utm_source=voltage&utm_term=ncbr8&utm_campaign=boston-acoustics&utm_medium=ppc
-Mike