User blog comment:Gundam Legilis/Volume 1 Weapons In Depth - Ember Celica/@comment-186.188.108.69-20140616150152

The overheating of the weapon is probably an issue already covered, the inside part of the pieces must be made of an isolating material that protects the user from 2nd degree burns. Not to mention, that if the user semblance involves "playing with fire", then the risk of burning one's arms is very low.

HSXI