I assume your talking about for clearing mid range heavy brush areas that normally pose more of a problem with dozers right? such as snagging in the tracks, having to push piles left and right etc.
Ive not seen the Fecon in action but have seen a few others work. They are somewhat slow so one would have to give himself a good lead on the fire. If the fire was close enough to pose a threat may as well add some ACs to it and pick a new line.