Response or Comment
That Instruments in form of wills may be effective as deeds of conveyance is clear. If a present interest is passed and execution is complete (which includes delivery), the instrument must take effect as a deed. On the other hand, If no interest is to vest until or after death of the maker and there has been no complete execution as a deed, the instrument, if operative at all, must take effect as a will. Difficulties arise when there is a fully executed deed, which, however, is to be postponed in its complete operation until the death of the grantor.
Aigler, Ralph W. "Deeds to Take Effect after Death of Grantor." Mich. L. Rev. 17 (1919): 413-6.