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