Looks ridiculous!
I'd try pushing around a small tow behind stumper with a mini before I went that route.
Just curious what "small tow behind stumper" would you push? Not many of those made anymore
"I must live under a rock, I have never seen a set-up like that , that machine is crazy.. "
You haven't been under a rock, there is nothing else like the 38 Special in America.
"I'm looking at a Boxer, but want to know what you guys think. I want good traction, but low lawn damage. Do I go with tracks or wheels? "
Wheels are easier on lawns then the tracks, though incrementally some may claim.
More Stumper story
When I first considered this Idea I was concerned about the machine shaking the loader arms all to hell. So I cut my old 1465 in half and ran it in my tree company for about a year (B4 I sold it). My operator liked it better, he could ride it, and the loader is faster manuvering around on a multiple stump jobs.
If you check this old Video you will see it did not rattle the old Thomas at all. This experiment gave me confidence that the machines arms could/would hold up.
http://www.intergarten.com/tnevideo/tnemovie03-bb340.wmv
My new 38HP way out performs that 1465 and costs ~5K less
The 1st pic is Austrailia's 20 HP Terminator, I was quoted 15K! to get one to the US many year ago.
Not many mid range HP stumpers out there to choose from, this may be a good choice for the tree guy going for a compact operation and keeping his Equip costs/overhead low.