Enterprise modelling promises many potential returns to companies but also entails some challenges for those institutions who engage in enterprise-wide modelling activities. To improve understanding in this area, an explorative survey has been devised with a number of companies from diverse industries. The focus is on business process modelling but also IT models are addressed. Most companies align their enterprise process modelling to one leading goal. While the extent of the model portfolios is very impressive, modelling often still does not cover all of the company. Further in many instances reported issues were the motivation of experts to cooperate with modelers, the integration of organizational and IT-models, and modelling tool related topics.