Brother Ashif, Why do you not recommend? There is a guy in our forum who has applied to two NOCs and has got fee charged on both, if I recall correctly.
Sternchen has more number of years of experience than the age of a lot of applicants here (what I mean is he has a lot of experience under his belt). I am sure he has experience in more than just one NOC if he is claiming that. I believe this can only be an advantage, by increasing his chances, if he plans on applying in 2 NOCs (as long as he can substantiate work experience letter / reference letter for the two NOCs). Also, I am guessing he is not going to show same work experience for both NOCs, unless his job required to do work of two different types and that is what has been documented and covered in his earlier application's reference letter as well.