Chronos are inherently prone to breaking - whether rep or gen - because they are an additional layer of complication. If you leave the chrono running indefinitely, then you are increasing the wear and strain on delicate parts, and increasing the likelihood that the chrono components will fail. Why risk it?
I felt exactly the same way when I got my first Noob Daytona - I wanted to experience the novelty of a fully functional chrono movement. So I ran the chrono a couple of times for extended periods - say, an hour or so. Very shortly after this, the watch stopped working. Ado213 fixed and serviced it for me. Here's what he had to say about the Noob 4130 movement - first, the main problem he found:
"...eventually cracked the 4130, biggest problem was the chrono clutch wheel. Bit of a assembly error at the factory. Plus what looked like a silk thread wrapped around the intermediate wheel."
Then, his verdict on the movement once he'd fixed it and serviced it:
"I can see little reason on the A4130 why the chrono cant be used. it differs considerably in operation to the A7750 as it has a column wheel chrono operation.
It seem the components within are also made of decent material and I haven't seen any obvious week spots in its design. The only one item that concerns me about the A4130 is the clutch wheel on the chrono. it can be a little temperamental. however if its cleaned and oiled properly it functions well.
At least on this movement the Chinese have done something within the escapement that I've been longing to see for a long time. There are no banking pins on this movement, this tells me that they are confident in there pallet jewel setting and the machining of there escape wheel."
So, in theory, it should be fine to run the chrono - continuously should you fancy it - on the Noob, once it's been serviced. But I would still be very inclined to avoid doing so.