Is mining Script-N pretty similar to the profitability of x11/x13?
Yes it has a similar level of profitability however takes more Power to mine, because of this your cost of electricity has a more significant impact. If you have free/very cheap electricity then Scrypt-N could be the best choice, but if it's expensive you would be better off with a different algorithm like x11.
Are GPUs even worth it with ASICS coming? Thx.
It looks to me like GPU's will still be around mining for a while yet, whenever an ASIC is released for an algorithm there will always be alternative algorithms around that have no ASIC's. For example SHA-256 (Bitcoin) and Scrypt (Litecoin) already have ASIC's so people mine other algo's like X11. If X11 has an ASIC released GPU miners will just move to X13, X15 or any of the available options, there will always be an algo that is ASIC free for people to move too.
As for GPU's actually being worth it.... well it will probably be that the very best mining farms with the best electricity rate will always remain profitable, however for the average joe paying a normal power bill... things are not looking so good unless you are happy be earning <$1 per day for all your trouble.