That wold be exactly my worry too. I have seen pro-quality suction cup solutions that I would trust at reasonable prices but those probably don't have the mounting flexibility you are looking for - hmmmm, interesting question you pose.
Have you looked at the Joby Gorillapods?
http://www.bhphotovideo.com/c/product/470237-REG/Joby_GP3_A1EN_Gorillapod_S...
Steve Crow
Crow Digital Media
http://www.CrowDigitalMedia.com