Although its common to associate higher costs with out of touch thoughts more so or before quality and service attributes, the OP did not specify a budget or a quality level. Our first thought here is quality and longevity, materials like Cromoly tubing, not just mild steel.
You would not have to remove the swing-arm to tow, the Anti wobble hitch mechanism keeps the tire swing from rattling in your vehicle tow hitch and it is mounted up high for off road clearance using 1/4" steel. Tow up to 7501 lbs GTW and is rated as a Class IV. There is much to be said for the design characteristics.
Also, with the Swing-out tire carrier, IF you needed to remove the swing arm for any purposes, or switch it to another vehicle, you can do that. You can't take your Xterra bumper off and attach it to another vehicle if you consider multi purpose applications for any gear or utilitarian option. this makes sense. It has modular add-ons.
While understanding the limitations of a OE bumper, most hardcore people wheeling are looking for actual protection and not concerned as much with weight penalties, therefore a bumper would make more sense, with or without a swing-arm attachment. A huge demographic of people daily drive their rigs, MPG's eventually come into the equation. I would usually leave it to the end-user to justify what works for them in many cases.
Please see the attached video, I think you might be at least a little surprised at the specifications and what you're getting for the money all things considered.
Added note, your recovery points should ALWAYS be mounted to the frames of the vehicle.