The form E106 was issued by the swiss insurance I chose. But after closer checking I gound that the local country health system (FR) has no way to find out anything about Swiss healt system.
So my recommendation would be:
1) If you live in FR and husband in CH - your husband should get CH insurance. For the work permit regiustration he needs to insure you as well, but he can cancel your insurance immediatelly (not to have extra costs). You register yourself in FR. You will be covered in FR and your husband in CH.
2) If you and your husband live in CH, get insurance in CH as it should be, cancel all others.

The basic rule is, get insurance where you live and stay most of the time. This insurance covers only Serious Accidents in other countris (not high temperature etc.. but PART of havy car accident). So you will never be 100% covered in other countries. But it is most reasonble if you do not want to pay insurance in CH and FR at the same time (which is not allowed, but possible).