I only saw Sheary in spurts for the Penguins. I saw pretty much every game he played for the Sabres. He’d occasionally make a highlight play, but the vast majority of the time he was the definition of a passenger.
He is fast enough to get open on the rush and could finish at times.
He doesn’t win puck battles. Ever. Literally bottom of the league.
If he’s got a line to open ice or an uncontested puck he’s got a great burst.
Unless he had a clear step, he would rarely dive in to contest pucks. He does not get to the net.
His backchecking was adequate
He rarely forced turnovers
He can make passes on the rush, but otherwise rarely created chances for teammates
He doesn’t turn the puck over much through bad passes, or really handle it much
He consistently turns it over on contact.
He isn’t skilled enough to be an asset on the PP
He doesn’t kill penalties
And as many have said, he falls down. A lot.
Essentially he is a pretty effective forward on the rush, and is skilled and smart enough to use the open ice a great player creates for him.
He adds very little outside that specific situation.
He is not the ideal choice to play with your best players, but he can be useful if he does.
If he is not playing with good players, he brings nothing at all.