lots of skate shoes have a stash pocket =) muskas.. they're circa now? when i skated they were és.
anyway..around here they always check cigarette packs and i don't see why they wouldn't do it everywhere else.
be more creative.
and definitely if its possible *at all*, roll them FIRST. before the party. (with 'filters' <- personal advice) ive seen far more people get caught rolling than smoking. rolling is way too intricate and obvious to do at a party. then bring them in in a baggie or something. depending on your hiding place they might get crushed, but then all you have to do is roll them again, and you'd have to do it anyway if you didn't try, right?
don't put it somewhere you hope they won't find it, like in a backpack.. put it somewhere they can't look. there are lots of these places. technically they're not allowed to ask you to remove any clothes, but i've ALWAYS been asked to take my hat off (i put the stuff from my pockets in it, they like that), and i've been asked to take off my shoes too. so those places are out. there are a couple ways of doing it that are absolutely impossible to get caught with (by security anyway) so be creative.
and don't assume everyone with a hoodie and dark colors has rollies.. i don't, and i get asked allll the time =P