The insurance issue is usually the big deal. Turo's best plan which often adds 30%+ to rate is usually at best an average auto policy if you bought your own, especially in a liability case. So if you normally have $1M-$5M umbrella, at best you'll likely cap to $1M with Turo. Liability is a low risk, thus why it's so cheap to buy, but it's one of those risks that if you are at fault, you're in deep poop.
Note: insurance is a state regulated industry as well and so it will differ by the company and by the state. Read the fine print carefully.
Turo would be a last resort option for me given the liability exposure and costs after you account for trying to replicate your existing coverage (Assuming your insurance won't cover it, which is often the case).
All said, if Turo continues to grow in acceptance, though, it's conceivable the insurance issues will work themselves out similar to AirBnB offering better and better coverage to owners (many AirBnB folks are grossly underinsured however putting themselves at huge risks).
If you were really interested in Turo, call your home and auto agent and ask them to bind/transfer coverage or if not, confirm why not.