[PapaBear3625]

Even if the government doesn't ban it for home use, your homeowner insurance agent would flip out if you installed a gamma source in your basement.

Put enough lead around it and it will be safe enough. Home use is not going to happen for at least a decade, until people get used to it and it's had some years to build a safety record in commercial and industrial use.

[Liberty1970]

True enough. In which case we should be investing in lead, not nickel, to take advantage of the expected E-cat boom. ;-)