Thanks Red. I was shooting in the dark as far as balance was concerned. I'm fairly confidant with the hardness and volume, but spawn chance was a total guess. Could the Cape of Flying (which, honestly, ought to be Ommel Hair by default, because red cape) be turned into an optional minor quest reward? Something on par with the sumo, but different, just to give players options? Also, an easy solution to the Cape of Quickness would be to instead have it grant agility (and/or dexterity?) buffs. This could also offer interesting tactical choices, as a player would be given the option to wear a different set of boots instead of defaulting to Boots of Agility; or they could stack the bonuses for cheese-level mobility... at the expense of protection of course.
And yeah - I could see an extension of this concept to gloves. Things like
bladed gauntlets which occupy both gauntlet and weapon slot, and use unarmed skill, could be nifty! Or body armors which come with built-in gloves/boots/helmets, or helmets with incorporated amulets, etc...
As an added bonus, things like this could be used to add another dimension to item balance, as a single strong item which takes up two slots may not be as valuable as a pair of less-powerful items (i.e., bladed gauntlets, which may be fast, accurate, inherently dual-wield-y, and could hit quite hard, but you sacrifice your Gauntlets of Dexterity for them)