I am curious to know if anyone has first hand experience with this product.

They have been in business for 10 years apparently but don't have a big dealer network. Their website is Tree Removal - Skid Steer Tree Saw - Tractor Saw- Turbo Saw Tree Cutter and there is some information on there on their CUT and Skidsteer models. I can't think of any other product on the market that would allow a CUT to take out 4 to 6 inch saplings and incorporates a grapple (though a skidder grapple might have been better).