I wouldn't say that speed of use is always a positive thing. Ease of use however is, and I feel that with a handheld light meter and my 500C/M I am far better off than were I dinking around with my Nikon N80. Even if it is slower.
I carry my Hasselblad quite frequently for hours on end, walking. Pick one lens, load one roll in the back and slip another in your pocket, and you're set.