I use footwork walking to my job every day. If the situation strikes my fancy, I'll even use some footwork dancing. I use footwork in the shower in the morning, but that's only if there's a good song playing. When I win at foosball, I do a little shuffle, but that can be called footwork.
What are you talking about? What are you trying to get at? What kind of "footwork?" All pro fighters (and fighters in general) have a style of footwork they practice, probably reaching back to a TMA... Or in certain MMA players cases (Lyoto Machida, GSP) their style and footwork is TMA-based, but altered to deal with wrestlers. Lots of players use a squared boxing style of footwork. It's MMA, buddy. People fight differently; you should be able to see that.
JKD Friend, may I suggest you try going to an MMA school without pretensions and try it out. I'm sure you'll see a synergy between your MA studies, and the information in that MMA gym. You'll also see where your training might be ineffective against other individuals specializing in other ranges.