[Nagoyankee]

Yeah, I notice the same tendencies regarding the uses of ～へん and　あかん/いかん in Nagoya as Nyororin.

The Nagoyans who use ～へん and あかん with consistency often originally come from other parts of Aichi-ken. I've seen this in my own family. My mother and her parents　are native Nagoyans and I don't think I have ever heard them say either あかん　or ～へん.　They say いかん and "せん"　as opposed to "へん".

My father and his parents, however, say both あかん and　へん all the time. They are from only 30-40 kilometers south of Nagoya ( Chita Penninsula ), though.

So, even though I grew up hearing あかん　and ～へん, those　still sound pretty much non-Nagoyan in my own ear. I heard them at home but not really in school as I grew up in Nagoya.

But then again, the Kansai-style speech has had enormous influence via TV on the rest of the nation in the last decade. I do hear teenagers saying あかん or なんでやねん in casual speech　not only in Nagoya but also even in Tokyo these days. Just the little phrases, you know, but not long sentences.