The DT100 velour ear pads do fit.
They alter the sound, but opinions differ if that's a good thing or not.
The velour pads make the bass tighter and the overall sound faster. But the soundstage becomes smaller. They are IMO more comfortable.
Maybe you can order them along and try out yourself. The pads you don't like can easily be sold here on Head-fi with little loss of money.
So... I'm about to order myself a pair of these, living in germany makes that a pretty simple affair. Question is: should I order the velour pads with them? 15€ isn't that much, assuming the DT100-pads fit. What do they really bring difference-wise?