walked around a lot in my apartment without any trouble.
walked up/down the stairs multiple times without feeling my knees.

BUT a a new problem arrived: my feet and legs are slightly tilted, so walking down the stairs for the 2nd time i actually felt my left ankle in a pretty bad way....

needs further testing, maybe training, but when I took the exoskeleton off and walked just a bit around in my apartment i instantly felt my knees again.

Conclusion: they work, but not perfectly 1st try

2/3