The DUKW works very well, transitioning from land to water is very smooth (provided your not going too fast) it looks good in the water and it steers OK on both land and water.
The DUKW has enough power to climb the slipway with ease although it does start to bounce if I go too fast over bumps (above scale speed).
Video of my DUKW in action.
Still shots of my DUKW in action
The model runs on two 12v SLA batteries powering two motors, one for the prop shaft and the other powers the wheels, 6 wheel drive, two speed controllers.
It's best to transport the DUKW on a stand - like you would a boat, you can just see the end of the stand in the picture at the top of the page.