Glacius may be the only icy warrior in Hadriel, but he is certainly not the only warrior, period. Moreover there are other beings with destructive powers and capabilities that even he struggled to stand up against that have been brought to this city on occasion, so he wouldn't consider that a point for himself; the incident of demonic possession continues to plague him. As for Carlisle's fears about what the ice alien may think if he knew about his compulsion, Glacius is already fully aware that he has used it on others--he'd learned after hearing one of the reasons Algidus had to be angry on him. What matters to the otherworldly being is that the clergyman making an active effort to turn away from it, now. To make something better of himself. That's not easy to do.

In short, he's prepared to overturn any misgivings his friend may have about himself, should he ever voice them.

"Trying is all that can be asked of anyone," Glacius murmurs, rubbing the smooth curve of his forehead gently against Carlisle's--it's meant to be a soothing gesture, and is certainly one only share among people that are close in his culture. "I know it isn't easy. But that just makes me all the more appreciative of your efforts."