This did intrigue me so I had a look online and did see this review (Acrohome), this ladder extends from the top and does have a double safety latch for each step which is a great idea and something to consider if you are not too heavy and ladder is not used to often 
The XTend+Climb looks more sturdy and less bendy but the Acrohome is more versatile.
Not sure about secure footings but online reviews are positive
In a completely sane world, madness is the only freedom (J.G.Ballard).
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