You also have to remember that it is not going to get you a decap every time. There are millions of openers that you can see and many of them can counter this and put you in a pretty bad spot.
For example, I have made an opener specifically made to counter this one, giving me the decap whenever they try something such as this.
Its always good to know how to adapt and look at your opponent instead of just doing the same thing every match up because you will become really bored and the fun will come to a screeching halt. While this is a good opener, I wouldn't recommend this to be the only opener for your matches, its always nice to have a wide array of openers at your disposal so you can catch your opponent off-guard and you could even make your own that others have never seen before, perhaps making your own decap openers, etc.