Class C full timing downsides
There isn't any! :W
I went from a TT to a Class C and haven't looked back! I full time and after testing the waters I added a toad.
I personally feel a lot safer having the toad, as I always have a backup vehicle if the MH breaks down.
If I break down and I have a couple of times.....I just put the dogs in the car and throw the keys to the MH to the tow truck driver and tell him to call me when it's fixed. :B
Don't think you need to worry about being separated from you belongings. Most repairs rarely take more than a day, maybe 2 if you have to wait for a part. I just grab my shower bag, and second change of clothes with me and head for the nearest motel next to the repair shop.