I don't think there is any honeymoon period yet. He hasn't played games in the regular season, much like anyone else that did well in the preseason. Preseason means very little as every team is playing at best, half their legit roster and half guys who are not NHL players or goalies. Pretty much seems to be regular that home games teams load up their game roster in preseason and road games they play a weaker roster which means many times the guys who did well are doing so against junior players or AHL level players.
Also, virtually all vets who know they are on the team are not playing anywhere near their full potential as that is a good way to get hurt in meaningless games. I remember guys like Hasek and Hull said vets want at most 1 or 2 at the very highest amount of preseason games just to shake off the rust. Vets don't care about preseason and nor should they. Preseason is only important for those that aren't locks, or youngsters trying to earn their way onto the team, so you can't definitively say, well this youngster outplayed that vet, because the young player is going full tilt and the vet is just shaking off rust.