our of curiosity, are many of you carrying both roll film and sheet film when tr ekking with your pack. being somewhat of a "animal", i carry both, but i wonder if it is necessary at times( 2 6x7's and one 6x9, 7 bw sheet film holders and i 'm adding another 6 sheet holders for color) i have 4 lenses ranging from 65 to 210 and all the other stuff---your comments????