Hi it's me again

I've been doing my research on PPI's and I found a Mobile PPI around my area willing to do it for about $200 and they'll come to the area of the vehicle. My question is since the dealership told me "No PPI's", should I bring the mobile PPI to the dealership anyways without informing them? I mean they told me "You are more than welcome to bring someone along to look at the vehicle...."