While Schremp may not be a speedster, he is quick and shifty. His straight away speed isn't great, but he can create time and space for himself with his skating. One guy who does this incredibly well is Daniel Alfredsson. At top speed, he's not a fast skater, but he utilizes his skating abilities very well, and his shiftines and creativity allow him to be elusive in the offensive zone.
The Havlat comparison doesn't work for me because Havlat really creates with his speed and is capable of absolutely embarassing defencemen with speed (and of course skill). The Marc Savard comparison is actually incredibly thought provoking, although I think Schremp will hit his stride easier in the NHL. That being said, Savard is quite a good comparison style-wise.