No overheating, just the normal heat generated by the processor when apps are running (heat generated is similar to stock rom).
The only issue I encountered is that sometimes (after 3 or 4 days), for no good reason, the Idle task starts to consume about 300mA or even more resulting in battery drain. You'll notice the phone gets warm without any activity. But that can be easily fixed by rebooting the phone
Definitely, it is okay for daily usage. Make sure you have installed the call echo fix and you are good to go.
As long as you have the stock LP 5.X modem there is no cause for concern. The mobile data works great. The data saver option also works great.