http://www.tc.gc.ca/tdc/publication/...100/14180e.pdf
If anybody wants to worry about RJ's and CRJ's and Challenger wings and lack of LE devices, read that link.
For the knowledgeable it will send chills up your spine. Challenger pilots should be very careful about icing, de-icing and rotating at too slow an airspeed ( or too rapidly ).
With the sort of wing-sweep the CL600 has, it should have been given a leading edge device (same with CRJ's).