No, enigma does not require IE. Here is Steve Craig's response to my forum question:
Good news, John!
Enigma does not require that any other browser remain on your system!
However, do not remove IE with IERAD or similar IE Eradicator, as they also remove needed Windows system files and Visual Basic files, meaning that Enigma and some other internet programs will not work correctly!
Use only the default IE Uninstall!
Good luck, and thanks for the comments!
Their forums are very active, similar to the I-opener forum. Steve Craig appears to answer most of the questions personally. That's tech support we dream about and will never have with the Monolith companies.
How do they do it for free?