"It's not the same," Luke answers and it isn't that he feels the need to argue with Alec, he just knows for a fact it isn't. If Alec were to need him, Luke knows Magnus would be there in an instant, a far more selfless act than Luke has ever really known him to perform. Magnus is willing to help anyone who pays him well enough, but for Alec he'd used all the strength he had just to pilot a truck across the water. For Alec Luke had seen Magnus do things he would have otherwise required a good deal of money for. He could say all this and maybe one day he will, but for the time being he lets it go. It will be good for Alec and Magnus to come to that realization on their own.

Luke's lips twitch slightly into a smile and he shakes his head. "Please count me out of any demon summoning," he requests. "I've sure Hodge taught you that certain kinds of demon blood can act as a poison to werewolves. Not that I think anyone is going to try and feed the blood of a demon to me, but I prefer to be as far away from them as possible until I know what they are."

Not that he has a chance to discover what they are while fighting, but that's different than willingly being at a summoning.