The only hassle is installing a plate below the frame, after that the bars have a quick release mechanism, they're just a click away from installing/removing. The thing with the ones adjusted with a strap is that if you don't attach them thoroughly they might end scraping the tire or the exhaust (it happened to me) So this system is like plug and play, they just wont move with the bar in place. (therefore, lazy friendly) Here's the link if you're interested.
Also a picture of the support plate once installed, it's barely noticeable.
And, it's 300€ + shipping.