Taking a whole "american" bowl in one hit isn't that hard, assuming it's of an average size. I can take half a gram through my RooR, and even that isn't much compared to what others can do.
theres sorta less communal bondage by smoking them individually, but also more in that people take turns in cuttung up (compulsory) and then helping the other person load their cone it does seem much more economicaldoing like this, a gram goes a fairly long way, and a cone is a good measurement for weed ive found,