I think it depends on the person, I need the reamer and can open on my Swiss Army knives and never needed the scissors or cork screw. I carry the Wenger Basic Issue or I think the Victorinox equivalent is the pioneer 
Discussion
Definitely like the screw driver and bottle and can opener as well. Cork screw for reasons below. Plus I also carry the eye glass screw driver that nests in the cork screw (had to order separately) also the tweezers are handy and the tooth pick I do use occasionally. The only tool I think is worthless on this model is the package hook.

