For a use with expansions boards like accelerator boards, there is a solution.
I have worked onto a new version.
For me, it's interesting since it's simplier to assemble the switcher.
Now, the (universal) PCB adapter plugged into the sockets of the A1000 motherboard is the same for the NTSC and PAL version.
The Switcher PCB, connected with a ribbon, is the same as the A500 Kickstart Switcher.
The three wires used to pick up signal from the A1000 motherboard are soldered onto the universal PCB adapter.
The pictures below shows this new version under construction!

You have to keep in mind that the price will be higher. I'll try to apply the same price as the A500 KSwitcher version. (21€)
But, if I put mini clips to pick up the three signals (to avoid soldering), the price will be little bit more higher.