well, I had been using this way, ever since I got my first Asus A7v mobo....
in this pic you see my very first chipset block, being held in place in such fashion. I never ever had any problems with it detaching itself.... in fact, I had a rather difficult time getting it off.... from there my warning to be careful, sealant between to flat surfaces, , combined with it's elasticity, makes for a very potent stick....