If you mean the Rojak one, ive got one.
Imo it is ok, but it has its limits.
If you are using it on dead flat,firm ground, it will give you an added degree of confidence.
If the ground is uneven or has a loose surface its dangerous, as it can wobble or slide.
As i rarely use ladders these days, i dont hardly use it anymore, but if a done a gutter clean for example, with the good ground conditions mentioned above, i would use it.
Dont know if this helps ??