A home that appreciated vs. an RV that depreciates. What will your overall cost be over those 11 years? What are you paying now for you home? In addition to the monthly RV park rent, monthly rates often (frequently) have added electrical charges and you will need to pay for the propane or diesel fuel to keep the coach warm and cook your meals. Even when parked you are going to have maintenance issues and if the coach really sits still for 11 years you will have HUGE maintenance bills to get the vehicle rolling if you actually wanted to use it. Maybe if you plan to use it at least once a month to do some traveling you might keep it in usable condition.
The upside is that you will not have to maintain the grounds (although many permanents still do some added yard work) or really worry too much about anything outside your immediate digs.