Well, its never been ECL'd anywhere and its in a book full of stuff PCs can take, right after a pile of pres classes. PC-able templates (as in, those not in a monster section) tend to use CR and ECL interchangeably, such as Half-Dragons and Half-Cels...remember, this campaign from what I see above tends to intentionally ignore stuff like errata, so this is within the pale of insane lameness to allow. If the errata on the bladed gauntlets can be ignored, so can the rule changes that indicate that templates that give CR as Char level + X means anything but +X as a level equivalent.