I have heard that vibration/noise can be an issue with a house-mounted windmill. I'm not sure if it makes a difference if it is a HAWT or VAWT, some might be quieter than others? I'm sure size matters as well, smaller may be less noise/vibration? It might deter squirrels from setting up housekeeping in your attic
A windmill seems like it might be more demanding to mount than a satellite dish? I'd double check the bracket mounting job before proceeding.
Another thing to consider is what a
failure turns into? Damage to the structure or the roof, or damage to your
solar panels? most likely during a storm when you can least afford that hassle!...
Would removing the bracket allow for expansion of your solar? I'm guessing you'd need extra equipment to integrate wind power to the system, but maybe by adding more solar, you could still use your existing equipment? or if you did need to upgrade your solar equipment you could make your whole system better?