nobody i know uses scissors, my friends and i always just rip it apart and put it in a small little container so we can just get a little pinch full of bud when ever we cache out.
At home/on the road I use fingers and scissors (if I've got 'em). At a buddy's place, I'm usually allowed to break out one of their bud busters or a coffee grinder. I love being one of the best rollers I know.
i use my fingers as long as it's not incredibly sticky or rock hard. if so, i use my grinder. never use a grinder if i'm smoking a bowl, always gotta if i'm smoking a blunt or j. it just rolls better that way. i used scissors before i bought my grinder, but a grinder is the way to go. and i cannot stand when people just plop a whole nug in the bowl and think that's satisfactory. you need to break that shit up, so it will light better, possibly stay light, and give smoother hits. when a solid nug is in the bowl, it takes a hotter flame to burn it, and the hits are too hot and nasty.
It takes longer and you usually get it in bigger clumps than other methods, like a joint that has grinded weed will usually have a nice coating of weed all across the bottom layer of baccy but if its finger picked its usually in clumps on top of the baccy, its hard to explain, i need pictures but have no weed.
Ive used a grinder, scissors, and my hands... Best method I find is to get a double shot glass, put the weed in the bottom, and just cut it in there. Then when the weeds out and you're left with the sticky kief in the bottom, pour a shot in, use a knife to pull the kief up, then shoot it. Fun