Greg, as Iwire points out, the sheath of this new MC will be recognized as an EGC per 250.118 and will allow MC to be used in 517 applications.

Other than that, I don't see where it will take the place of AC or HCFC.

With the larger AL bonding strap along the length of the MC smart cable, verses the smaller strap in AC, I can't see how it will be any cheaper.

Granted, I do like working with MC better than AC or HCFC though.

Roger