I have the 10" Skywatcher solid tube dob. Nice scope indeed. Dont plan on transporting mine so collapsible wasnt needed. The 10" does have the Pyrex glass and I haven't really noticed much cooling issues. As such I dont have or seem to need a fan on mine. It definitely does need a Telrad though and I have since purchased and added one to my scope. Even thinking of adding a chain of Red LEDs around the base with a simple switch and small shelf for a battery to run them at night when I need to look at a chart
