I have seen something similar back in the 80's-90's. Looking a the photos, it looks not too ergonomic. I see left leg & left arm up at same time. From a climbing perspective I'd want opposites: ie; left leg up, right arm up & vise/versa.
Doesn't look too sturdy IMHO.
The Maxi Climber provides a full body aerobic and anaerobic workout. It will sculpt and tone your calves, thighs, glutes, core, shoulders, triceps and biceps as it increases your cardiovascular fitness. Every 60 minutes you spend using the machine, will burn an average of 500 calories.