The step aint practical.
Its flimsy and awkward to carry and on it you CANNOT fix returns... or erect splays properly.
Reason being is that the top section hooks on the top handrail (or any horizontal tube) and to bottom goes where? - On a standard. So that alone severely limits where and when your able to properly use it.
Its design as usual has been rushed and is untested.
Its f.ucking shiit and if it aint banned, then it needs alot of 'fine-tuning', before its ready for day in/day out usage.
The other type ive seen, but not used is the kind of small step-ladder thing.
This is even worse, as it relies on resting on your boarded lift and your top handrail.
Which means that if your top handrail is even a little bit over/under the 'recommended' minimum height - your f.ucked again and it dont sit right.
Either type ive seen are both shiit.
They are only good on the absolute perfect jobs where everything falls into place and everything worked exactly to SG:04 or whatever regulations.
VERY FEW JOBS IVE WORKED ON DO ACTUALLY WORK OUT LIKE THAT - something always goes wrong and needs to be changed/adapted.
In my opinion.
We have only ever used the Combisafe type with the 3 step ladder attached which has telescopic legs which I have never needed to adjust. I've never found it particularly difficult and at times it does need to be adapted but with a bit of thought and practise I was surprised how simple it has become to use.