Once upon a time, Seth might have been suited for combat. He certainly fared decently well under dangerous circumstances and could hold his own in a fight. But his ability to keep a clear head in a situation like this seems to have gotten sort of wiped out by four months underground.

Daniel's last comment provides another small glimpse into the source of his problems with phasing, even if it's not overly specific.

"But. Can we get in there, with my power, but without," Seth says, gesturing at the grenades to finish his question. Not being in immediate danger is not currently his concert, it's Daniel he's worried about. And if at all possible, he would like as little bloodshed as they can manage.