Yeah, we did the same thing with State Farm. We have all the vehicles and renter's insurance through them and we get great discounts!
On an separate note, I took all coverage off the SVT except fire and theft. The guy told me that I had a bill for $360 coming and to ignore it because by reducing the insurance on the SVT for the winter I got a $30 credit! That bill for $360 was for 6 months, so by putting the SVT away I only pay $330 a year!! I love State Farm!!