Just to add to what pjbth said, Karsums DOES have the offensive skill, but he is FAR from the typical short European forward stereotype. He's been hurt a lot of the season, but I probably saw him 15-20 times between TV and live games (actually, maybe more), and I'd say I could count the games on one hand where he DIDN'T absolutely destroy somebody with an open ice hit. He finishes his checks when forechecking most of the time, but its the fact that everybody in the neutral zone really needs to keep his head on a swivel when Karsums is on the ice. He makes good, solid, non-charge hits in the neutral zone, almost always on guys a heck of a lot bigger than him.
He's a great guy on the PK as well, because he's got both quickness (short bursts, good on his skates) and open ice speed. He seems to be able to anticipate the cross pass between D well, and has scored a number of times SH by picking off that pass and scoring on the breakaway.
The thing with Karsums is his health. He's been hurt a heck of a lot this year, and that's the big concern with him. He sort of plays a style that may make him be hurt a lot. Sort of a guy like Alexandre Picard (F, Columbus) in my opinion. Someone who could be a real solid, character, NHL guy, be defensive and score, good 2-way forward, if only he can avoid the injury bug.