Can I ask you a simple question?
Why and for what reason you would even wish to make asic for n-scrypt?? 0.o Did you ever read what is about n-scrypt and coins being asic resistant?
Or you planning to lose money on investing in development into this or you have way to do this additionally without effort and costs...
Either way let me clear small thing:
Most coins, lets take Vertcoin as example (first and biggest n-scrypt based coin) from always was clear and all miners are and will go with this: IF there even be made ASIC for n-scrypt... THEN this coin will HARD FORK if needed into new Better/more ASIC resistant way...
N-Scrypt is just SMALL part of ... n-factor etc etc stuff.... the idea of being asic resistant is that if required - solution is made...

So .... is it worth? Will it be worth? Just curious... as cant understand why to put money into something that simply will anyway fail?

Well just my few cents here