I can understand, sort of, the justification for a wand requiring greater training, but that's assuming that part of the process of firing the wand was more mystical than a point and fire device.
This would be in line with the 20 DP for Fighters.
Yeah, Pastaav is 'right as rain' with the points on realism. Fighters do excel at learning weapons; any weapons.
My point 3) above, handles one particular instance, but maybe a solid rule would work better for some.
If arnecooper doesn't mind, a related question..
Has anyone allowed different DP cost skill advancement for better Attunement rolls?
'Fighter picks up the sword, realizes it's a really nice blade, perfect balance. Through experimentation/use she sees that it doesn't retain nicks and scratches.. or somehow determines it's magic.
Now, she tries Attunement...
Could a better roll give a bonus to use, or like markc said, above, maybe she can connect with it like the Profession it for which it was made. "You learn that it can shoot Firebolts AND can fire them like a Warrior Mage."
Just a thought.