I'd love to have them both up as well, but realistically, they have to comply with the 23 man roster.
Our roster as it stands:
Mule - Z - Brunner
Flip - Pav - Tatar
Bert - Abs - Cleary
Tootoo - Emmerton - Miller
Kronner - Ericsson
Quincy - Lashoff
Huskins - White
Howard
Mrazek
Kindl - Eaves - Gustavsson
IR - Helm, Mursak, Sammy, Cola, Smith, Joe Mac
23 Active - 6 Injured Reserve
To call up either/or both, they'd have to send one or two down, and all but Tatar would be exposed to waivers. I thought Tatar played a solid game, and deserves a second chance(hopefully on Datsyuk's wing), so I'd hate to see him sent down.
That leaves us with Cleary, Miller, Eaves as possible demotions. Emmerton I would expect is safe as a center, though if he, or any of the other guys mentioned could be salvaged and traded for picks, that'd be a huge bonus.