I have had it for a month and I use it for amateur purposes. I drilled 8mm holes in an old warehouse concrete and mainly in bricks to hang shelves, everything worked fine as expected. Of course, it is not SDS but a battery-powered hammer drill. It is small, sturdy, brushless, with a lithium battery that does not tire the hand, and I easily screwed non-stop with 4X60mm screws. It is expensive, I would say, as you can do the same job with less money, but it is a reputable tool and I expect it to last for years.

Update:
After ten months of having it and minimal use (mainly screwing with a 3.5X20 metal screw), a problem occurred. The drill fully charged its battery when stored. As a result, two batteries were damaged. I sent it to the Bosch service in Thessaloniki (the service was very polite and helpful) after a phone call and providing all the necessary documents. The drill was repaired, and they sent me two new batteries without any financial burden (I was not charged for shipping either). They returned it within 7 days.

Update 15/11/2023:
Purchased on February 12, 2020.
I am coming back after the expiration of the three-year warranty, and with minimal light use, it presented the same aforementioned problem. I will not send it for repair and I avoid leaving the battery inside the drill. I believe that the Bosch GSB 12V-30 model is defective as it repeatedly presents the same problem even after being repaired. I recommend avoiding purchasing this model.