For a long time I didn't even know there were people who nót use a tip / roach; especially since here most people use tip material you can buy in the coffeeshop, whenever I was in the UK I'd use the pack of rizla first, and then train tickets and anything else with the right texture of paper, I can even use printing paper to make roaches from, pretty much anything works (I do that here too if I run out of actual tip, then anything that is paper or thin cardbord works fine).
When I was on a festival at some point we actually ran out of paper and cardbord and smoked the joints without any roach for a few days, actually wasn't too bad (still rolled them with tobacco though; which I have to do since I smoke hash most of the time, and even with weed I dislike pure, too harsh to smoke pleasantly).
I've never seen an american joint or seen an american person role a joint, but it sounds odd to me, pure with no tip, won't you get weed in your mouth doing that?