If you buy them from Gun Connection, He will install them while you wait.
I have always been a bit of a do-it-yourselfer, but personally, I would buy a universal sight pusher... they pay for themselves after about 3-5 uses, depending on which one you get. Nylon and (if it is really tough) brass drift punches work well on most guns also.
I hear the XDM is a real bitch when it comes to site removal.