I believe that scryptASICs are already mining. Look at profitability on coinwarz.com   Rigs with performance 2-3 MHs hardly pay for electricity spent. If you buy bigger rig now, you will hardly see ROI. There is only one explanation - scryptASICS are being "tested" by producers or distributors before releasing to public.

So graphic card based miners will move to scrypt-n or something similar (see vertcoin difficulty and price rising now). I am not sure, what it will make with profitability of mining these coins, but I am sure scrypt coins will be very soon dead (maybe except few biggest). Because when miners will move from currency, traders will follow them.

Aircoin has strong dev team, I believe they will be able to respond to this challenge, but it should be done ASAP, to do not miss the train.  (and they should solve also KGW problem at the same time. The adjustment is too slow giving space for speculators.)

I am still mining Aircoin, because I invested into it. Maybe it is not the most profitable to mine it, but I do not care whether I earn 2$ or 3$ daily. The difference is to small between coins. Pointing a rig towards specific coin has become practical declaration of its support, not "quick-earn-a-lot" business (as it was ment in the begining of all this cryptofun)