I believe that the 2010 is the same as my 2008. On mine, there is no steering wheel lock, so the Liberty can be towed without the key inthe ignition and no battery disconnect.
You can check by turning the steering wheel without the key in. If you can, then there is no lock, and no battery disconnect. The manual transmission model can be towed, but I believe there is a steering wheel lock on it, so you need the key in the first position past lock, and you need to disconnect the battery to keep from draining it. You can get power for your braking system from the motorhome. I don't know what fuses you could pull to eliminate the battery dsiconnect. Maybe you could check with your dealer.
W8RLM - Bob
2006 Winnebago Journey, Model 39K, 2013 Dodge Dart