G'day all, bought myself a 1.5ltr camebak the other day. guy at bike shop suggested I wear it under my jacket with the tube coming out the collar. tried this yesterday afternoon and found it ok but where the tube comes out I find it pushes on my throat a lot and also the tube's movement is restricted. Today i'm going to try wearing it over my jacket. Just currious about how everyone else wears theirs ( I know, on your back) and if there are a few tricks in useing a hydropack while riding.