Equalization (3.5 specific magic weapon/minor artifact?, PEACH)

[TuggyNE]

So, I randomly had an idea for a special magic weapon. Here it is.

Equalization
+1 Holy Unholy Axiomatic/+3 Parrying Defending mithral quarterstaff
Unusual for a quarterstaff, this slim, hollow rod is made of mithral, with exquisite balancing and heft, and the ability to bypass DR as though it were made of alchemical silver (but with no penalty to damage). The wielder gains a +1 insight bonus to AC and all saving throws while in use, and may transfer some or all of the second head's enhancement bonus to AC, as the Defending ability. Furthermore, it strikes fearful blows with its first head against those of any alignment but Lawful Neutral or Neutral. However, Monks (of any legal alignment) may wield the staff without suffering negative levels from opposed alignments.

Finally, three times a day, as an attack or part of a full attack or flurry, the user may declare a melee touch attack with the staff to force their opponent's armor to make a Will save against a DC of 14+the wielder's Str modifier or become unbuckled, loosened, and fall off; if the attack misses, the attempt is wasted. Failure on this save immediately negates the armor and shield bonuses (as well as any other special abilities) provided by all worn armor, and entangles the wearer until the end of their next turn, after which the armor drops away entirely. This is not effective against most cursed armor or shields.

Moderate evocation [lawful]; CL 15th; Craft Magic Arms and Armor, order's wrath, holy smite, unholy blight, defensive precognition, shield or shield of faith, creator must be Lawful; Price 148,600gp; Cost 74,300gp + 5944xp

As always, suggestions for better wording or more sensible powers/prerequisites/price are welcomed.

(And yes, Chaos Monks can wield this with no penalties even if they're CG or CE.)