It's a good idea if you have a room dedicated to reptiles with multiple animals. For just one, or even just a few, animals. It is not practical and would cost a whole lot more. Also keep in mind that artificial heat dries out a room. It wouldn't be to the extent a CHE or a bulb would, but it still dries the air.
Hardly worth paying to heat an entire room when you only need to heat a single enclosure.