Love it for added stability on hills!
Right after I put duals on my Gravely, its right axle seal started to leak. Also had put steering brakes on it. In doing this, it disturbed the seal because you can just pull the axles out without the brake backer plate bolted in place. So, don't know whether it was from disturbing the seal or from extra stress via the dual wheels. Gravelys were designed to take dual wheels though.
Duals add TWICE the traction, plus give more side-to-side stability.
Ralph