There's no point in playing him there when you're trying to fine-tune the PK for the playoffs, where he can't play.
Playing him there for a bit wouldn't alter or hinder those plans in the slightest, especially given how heavily they rotate their forwards.
Also, the time to "fine tune" anything like that is long since past. Practice time is slim this time of year, they're not going to make any real tweaks at this point.
And I will reiterate, playing an inherently bad penalty killers (JJ, JTC) ahead of a newbie doesn't make any sense whatsoever. Neither of those guys will be any better at it after all this time, so giving Meyers a couple shots to see what he can do would not affect the team's scheme at all.