Hmm, if it's just a comfortable chair you are looking for, i would go for something similar to these lounge chairs, had something similar in shape for many years, and am very satisfied: 
      NO WHEELS! <-- best for a long and comfortable gaming session imo 
------------------------------------ 
And if you want to build a gaming station, i would go after a solid-frame rack/rig type:  
 And if you have extra cash:  
 Would buy one in a heartbeat, if my wife would allow such a "waste of space" 

 Something i am looking forward to when we move, and i have my own gaming/music basement 

------------------------------------ 
As for your pick - it seems to be a comfortable chair, but i don't understand the idea behind the wheels... If it's for racing sims - you will have a bad time 

 Unless there is a wheel-lock of sorts.
And it's not cheap either - 300 Euro... Hmmm... Have you physically tested/touched the chair yourself?