Rereading this thread nearly two years later, I ashamed to admit I must have been having a really insecure and/or blonde moment when I started it. sorry.
I agree with what BQ posted above. State guidelines require the mortgage to indicate homestead or non-homestead. Therefore there is no need for the husband to sign off on the mortgage of non-homestead property titled in the wife's name only.
Further, in Wisconsin, one spouse can take title to and mortgage any property, even one that will be the homestead, in their name only. However, the spouse's signature would be required on any refi of the homestead property even tho it is titled in only one spouse's name.