I'm not sure which specific tyre you mean, as Schwalbe make various tyres with kevlar or some other form of puncture protection.
If puncture protection is important to you then you'll be hard pushed to find a tyre to rival Schwalbe Marathon Plus. I've run mine for about 3000 miles or so without a puncture. No punctures either on the Marathon Winter tyres I've run for the last couple of winters or the City Jets I used to have on the Moulton. Personally I'm loathe to try any other brand seeing as Schwalbe look after me so well. The Marathon Plus tyres aren't the quickest tyre on the market and they're a fair bit heavier than most other tyres of the same dimensions - to me that's not important though.