I think people are misinterpreting what the position would be, or I am. The consensus is a situational role player subbing in for the NC. That is what Neal and some of other Safetys did. They are 190-200 pounds and are larger than our normal Nickle corner.
What this "Buffalo Nickle" is, a big former Safety (215-220 pounds, none of our current Safetys are over 200lbs) who are very fast, very strong, very physical, very agile. They are new age LBs who lack the traditional pounds, but are elite athletes. These Buffalo Backers can stay in a base defense when opponents go 3 wide, or cover these crazy TEs. This isn't a gimic situational player, but a new age defensive weapon.
We could see 2 by the time Sunday rolls around.