A 9mm ported barrel does not reduce the muzzle jump much. But it will make the gun a lot louder to you, the shooter. Most folks ignore this issue, and pay the price when they get older. Any hearing protection will be defeated by the noise loud and persistent enough.
Cleaning the ported muzzle is an extra chore. If the front sight is close enough, it will be fouled heavily.
The 5.25 XD has such pretty factory fiber optics, you don't need any porting with it.
I have the XDM 5.25 9mm version...great striker gun and magazine holds 19 rounds...no need for an extra mag for self defense situations for sure
Man once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder, is the sport of every wind.
-Thomas Jefferson to James Smith, 1822.