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I think I have the exact same combi drill and bits. The bits, new, made all the difference in my old flat where the shitty ones I had wouldn't even get me in far enough to hang a picture. But I wouldn't imagine they'd be any good on stone. As everyone has said, an SDS is what you want. they usually come with a couple of bits and a few chisel bits. I got the 5kg Titan one for about £60. That has paid for itself in drilling into ancient concrete and using the chisel bit to take down the old monster fireplace.
brand new and first use. Bought the drill before xmas and got a set of bosch bits to go with it. I think it has gone through the plaster but none of the stone