Preserving/Protecting new TC without a garage?

Diligent covering with any cover will keep it newer looking for much longer in my experience. I'm not sure of the weather in your area, in mine the sun does more damage than the rain - but given the penchant for leaks over time with most RVs, long term in helps with water damage too.

The Calmark cover will outlast the cheaper disposables by many times, but it is a heavy thing to put on and take off, leading to less usage perhaps.