Paul,
I put the Hyde combo guard on my ’01 XC300 with a Doma pipe.
First, the original Hyde mounting brackets would not fit. The replacement brackets fit OK.
I had to remove most of the rubber pads on the guard adjacent to the pipe to get it to fit.
The Hyde combo guard provides very good protection. The skid plate portion works very well and slides very easily over rocks. The lower pipe protection and right side pipe protection is very stout. The only concern I have is with the protection on the left side exhaust header. So far, it has not taken a direct hit on the left side header. However, I expect that a direct hit on the left side header would bend the header pipe toward the frame.