I read about it once but did not use it. I switched to the scapy function set (M. Biondi EADS) and import it direct into the python code. It is easy to use to dissect and repack but not well documented though I like it. I am finishing a big project with it at the moment using Dot11 and Ether.
Yes I am starting to use SPE but I still prefer NEdit. I just type.