On a vehicle with a 6ish foot roof - I can reach the roof from the ground. I don't think I've ever seen anyone climb a ladder on any overland vehicle with the exception of sprinter vans or similar with a very tall roof or an actual safari rig that has a large full width rack that requires you to get on top to access it. On a vehicle with a roof that's no more than maybe 4 feet wide only 6 feet high - I'd pass on the ladder. I'll stand on a tire or slider if I need to, or just on the ground.
I'm a fan of Toyota's OEM steps on the LC200 that work with a step on the racks. Small, unobtrusive, light weight, and functional if you need it. Maybe it's just too early, but I'm not really seeing this kind of small attention to detail in offering functional stuff that we used to see from Toyota. Maybe they weren't popular enough?
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edit: found a better close up
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