While still a small sample size, just wondering if folks are becoming more comfortable with Kostka?

Not sure if it's appropriate to pile an add/drop question into the Kostka thread so I apologize in advance if it's not, but I'm thinking of adding Kostka to my lineup for this week given that I'm still unsure of Seidenberg's status. We only do weekly lineup changes -- on Thursdays -- and was really hoping Seidenberg would play last night so I wouldn't be dealing with a questionable tag heading into Boston's game on Friday (he's mainly on my roster to bolster my blocked shots and hopefully chip in a decent +/-, but I don't want to lose the man games if he were to miss more time).

For what it's worth, I saw that Kostka still logged big TOI last night even though Gardiner returned to the lineup, as well as the second most PP time, a few seconds behind Phaneuf and 2 and 3 minutes more than Liles and Gardiner, respectively. Maybe Gardiner is being eased back in following his concussion, or maybe Kostka has carved out a sizeable role for himself regardless.

In any event anyone think Kostka over Seidenberg is worth the gamble?

__________________
14 Team H2H Dynasty League (14 keepers, 21-man roster, no farm)
G, A, PPP, SOG, BS, +/-, GAA, W, SV%

C: Giroux/B.Richards/Ennis/Cullen/Grigorenko
W: Ovechkin/Neal/Nash/Skinner/Eriksson/Silfverberg/Samuelsson(IR)
D: Doughty/Boyle/Faulk/Seabrook/Martin(IR)/Seidenberg/Brodin
G: Fleury/Markstrom/Lehner/Khudobin