If it is on something like the main gear on an aircraft model, I would probably wait overnight before actually trusting it to be fully cured.
I've never tried the Testors CA, but if you are referring to the orange tube glue stuff or cement, I'd give it maybe a couple of days for full cure.
I have switched away from using CA except for on PE and other hard to secure parts that needs help from CA activator. I personally like using a PVA glue as well for PE, in particular I use Gators Grip regular and thin formula. I like that it holds well, dries clear and is somewhat flexible.
I do know that there are some builders who use CA exclusively on their builds and have good luck that way. I've never had any luck with it myself using it for the entire build. My problem is that I've had a model literally fall apart when using just CA. I cant say that this has occurred using the Bob Smith brand, but typical stuff you can pick up at most stores doesnt seem to last for the long-term.