Not sure what aircraft you're talking about or what part of the world, but I find containerised aircraft ten times better than bulk loaded
A good ramp team with equipment at the ready should be able to offload and onload 4+ cans in under 20minutes, we regularly achieve this with narrow body aircraft.
When it comes to bag offloads, containerised is also way easier. You (should) know exactly which can the bag has been loaded in and which position the can is in, should take no more than 5 minutes to locate the bag. By rights your ramp team shouldn't have to 'go find' the equipment to start the offload, the hi-lo should be left at the aircraft side until you've left the gate. That's what your airline pays for
It's much easier to locate 1 can then search through 35 bags than it is shift through 145 bulk loaded