I probably would not port one either tracker just because it is really not needed. The front and back strap checkering should be standard on a R9.
I will say this though, all the reason people give for not porting I found to be untrue. Noise, flash, and velocity reduction are just not a problem with a 9mm.
I have quite a few comped guns but the only ported auto loader I have shot is a Springfield V16 45 Super. Noise and flash are seen with it. I have a comped 357 Coonan and it is blaster.
Here is an Auto Mag at Dusk in the Desert. Click to see.