I have had standard hip/fannie packs in the past which were fine.  They annoyed me sometimes when trying to get into my side pants or shorts pockets to get my money clip.  The Pacsafe is a good design because it goes over one shoulder (reversible) so it doesn't block your side pants or shorts pockets.  The over the shoulder design is hard to find as I've been looking for quite some time.  It has plenty of built in security features and it is very well made.  And after all, how do you resist a product for which the color name is Tabasco.