Anyone know of any automatic monitor switch solutions for a graphics board based Amiga system?

In my A4000 system I have a manual Eyetech Bmon monitor switch so I can switch between AGA and CGFX screenmodes, a working solution but an automatic switch is so much nicer IMHO.

I can not think I am the only one with this problem since there ought to be hundreds of users out there with Bvision/CVPPC boards, or what about Mediator systems with Voodoo and Radeon cards combined with Indivisions and other scandoublers.

If a lone genius can clone an entire Amiga 500 in his spare time I am sure another Amiga genious can come up with a solution to this problem, or what do you think?