I've been using my Magma on my Fallen Angel since I got the magma, early last week, so that would be a NO.
Granted, I use a Kick in both my mechs, so I have the beauty of adjustable wattage and a little bit of protection, with a device that won't die just 'cuz some itty bitty thing on a circuit board died. If the Kick(s) die, I'll buy more -- $12 for a Kick is a lot cheaper than +$30-$100 for a whole new mod.
If the FDA "fixes" things so that electronic mods are either not available, or so expensive that nobody but Buffett or Gates can afford them, mechs will make a huge comeback. I have two, so I won't need to worry about modifying a flashlight, for which I have neither the skills nor the tools.
Haven't we thrashed this topic to death YET??? Everytime I turn around, someone whose mechs are gathering dust because they've discovered regulated mods is convinced that that means EVERYONE feels that way.

We don't. I prefer my electronic mods, but they won't last forever, and I'm terribly concerned about what the FDA is going to do, so I'm getting used to using my mechs.
Andria