I use to do that too, but I have seen 2 car fire in a major chain shop near us because of the carb cleaner and that made me rethink my intake leak diagnostic strategy. :)
The big advantage of the smoke pump -beside the safety- is that you can really pinpoint the leak and it also works on the EVAP system. I was using it to find air suspension leaks too.
I have a Redline Smoke Pro and I love it.