I currently lease my GPU rigs to scrypt miners, but have been considering Scrypt-N because of the competing ASIC rigs expected this year.
Its interesting that in recent days, scrypt-N coins have been dominating the Coinwarz profitability chart, when I enter Scrypt-N hashing rate that corresponds to what has been reported for my type of GPU cards.
Are you making sure to halve the kh/s that you see on normal Scrypt? When I go to Coinwarz and put in my scrypt and scrypt-n rates, I'm seeing 7 scrypt coins at the top.