I've been looking at them on Amazon; Seems like there are hundreds of them,....and every one of them has some negative feedback where a step or latch broke after a couple of uses and threw someone on the ground.
I bought one years ago from Home Depot for attic insulation inspections,.....it DID throw me on the ground the first time I used it,.....customer was standing there intrigued by it,....until I started to climb up it,....got to the 3rd or 4th rung when it collapsed enough to drop under the garage ceiling attic opening where the ladder had been supported,.....now no longer supported by anything,....the ladder and I went crashing down on the concrete garage floor landing on my back on top of the ladder and a lawn mower..........nothing broken but my pride,......horribly embarrassing,.....could have been much worse,...potentially could have broken my back. I still love the concept,.....just nervous about them.
Brian