I have yet to jump ship to the cross cam­era lens mix-matching, but Novoflex has given one rea­son to, they just launch a new adapter for Nikon lenses to Canon EOS bod­ies that is able to main­tain elec­tronic meter­ing func­tion, the catch? It costs $300:

The new adapter is made to very pre­cise and high stan­dards to ensure exact infin­ity focus on the Canon cam­era. With the EOS/NIK-NT adapter auto­matic expo­sure meter­ing via stop-down meter­ing is pos­si­ble as is aper­ture pri­or­ity auto expo­sure. The new adapter fea­tures a lever on the side of the adapter to let users con­trol the aper­ture on G series lenses. For users of non-G series Nikon lenses Novoflex also offers their orig­i­nal Nikon to Canon adapter, the EOS/NIK.

Keep in mind, though, using a lens adapter means loos­ing light, and it requires some addi­tional invest­ments, like your time (prac­tice) and acces­sories like a split-image focus­ing screen for the auto focus­ing func­tion that you loose.