I've ran it every game since. Skink alpha movement ability makes charges after teleport lots more reliable, so I'm using the Stegadon to take out lone or weak targets. I haven't ran the flamers though as mine is fitted with the bow.
The flamers look tempting, but the bow is still more versatile. When using the Stegadon for teleporting around this way, I also can't help being worried that the flamers will do more harm than good. If I target a unit with 1 wound models that I also intend to charge, the flamers potentially give the opponent the option to remove models out of the way so the charge becomes harder. It's so very situational, where as I can still use the bow to try to snipe key targets and such.