The sailing cat may have a gap between the central structure and the hulls to give wide sailing stability. The power cats drawn to date are being set with the central structure overlapping the hulls, which are then more easily rotated and supported. Setting up the hinges and rotating system is not difficult, primarily requiring that the hinges are in line. In many ways we see the Amkat as applying to power as much as to sail. There are hundreds of thousands of boats that take to the water only when needed.
Convenience is nearly always an important factor.
In some instances as safety or rescue craft, it could be a matter of life and death. The launch from a trailer, with the gear that is available today has become much less of a hassle than it used to be but the situation when the waves are breaking onto the launch area is still very difficult at the best of times. I imagine an Amkat lifeboat or rescue craft with the ability to drive right through the breaking wave as it leaves the beach or drive with the waves on return and be on land and free of the break area before the wave hits. Another scenario - a rescue craft has the patient on board but he needs hospital attention. The boat heads for the nearest harbour which could be many miles and some time away.