...for three reasons.
1) She could steal from you.
2) If she knows where you live, she could use that information against you.
3) Outcall costs more, except for many/most providers in Las Vegas.
Beyond those three reasons, your marital status adds others risks to the equation.
What would be your reason for scheduling an outcall, since an outcall would probably cost more? Is it the psychological thrill of fucking a hooker in the bed that you share with your wife? As single guy, I can only imagine what the monotony of marriage must be like, and maybe that is a good enough reason for you to incur the additional cost and risks of an outcall to your home, or maybe it isn't. That is for you to decide.
In any event, if you do decide to proceed with this outcall, I would recommend that you secure your valuables. Do a Google search on the term “chica-proofing.” It is a term coined by North American mongers that visit Latin America to fuck the local hookers (known as “chicas”). It refers to the process of securing your valuables when you bring chicas back to your hotel room or apartment to fuck them. The chicas will steal anything that is not bolted down, including a used toothbrush – yes, a used toothbrush. I am usually quite thorough in my chica-proofing when I go down there to monger, but once I neglected to put away my toothbrush. It would not have occurred to me that someone else's used toothbrush would be worth stealing, but apparently this chica thought it was.