The KA-32 is pretty impressive as a vertical lift machine. Even on the ground at flat pitch, the downwash is so strong it literally pushes you away from the machine.
There's a reason why it does so well with underslung loads and mostly vertical lifting- the two disks act like the first two stages of an axial compressor.
It's not just the horsepower that makes this machines so good for the logging mission, or makes the tandems so popular as well.
There are a lot of structural advantages to the tandem or coaxial machines when it comes to vertical lifting- no tailboom twisting, etc.