There rear entries are nice for the operators but add too much cost to the life cycle cost of the machines from what I've seen. All the electronics get moved around and sometimes the things that keep them intact don't get the same attention to detail that the factory does on standard machines. Harness connectors, loom routing and even things like the capacity of the air conditioning become intolerable problems. We had to double the capacity of the A/C systems and put tinting on all the windows, which brought some issues with safety people at times. I've had connectors disturbed and not making full contact in the connectors and some even had wires getting pulled out because there wasn't enough slack when tilting the cab. I had one machine where the loom got loose and when the cab was tilted back down it cut the loom at the riser and frame.
The other issue I've seen is the extra weight on the slewing bearing. I've changed half a dozen where the balls have made impressions on the race and begun busting out the case hardening. You see the shiny particles in the grease at the bearing halves.
Around here the Weyerhaeuser camps all required them except one manager at White River. He asked a basic question, "just how many lost time accidents have occurred from entry and egress from the side door cabs." When they looked at the records, there were none. That was the end of the rear entry for them. I haven't seen a new machine with a rear entry around here in more than five years.
Love the photos, keep them coming!