by mltdwn
Perhaps it would make more sense (which it does to me that you can PLACE an enchantment on anything, though I haven't) if we looked at enchantments as actually TWO spells.You have the placement part which is identical for all enchantments (so whenever you PLACE an enchantment you are always essentially casting the same spell, going through the same motions, etc.)
Now you have the reveal part which is where you cast the enchantment SPECIFIC spell to bring it into reality.
Using this logic it makes perfect sense.