I stumbled onto this scope while perusing OpticsPlanet's website. They have a site-wide 10% off sale, bringing this package down from $164.99 to $148.49--great deal! Then I saw this thread... I had to bite!
I also recently grabbed up a C90. Mine came from the B&H site, at the same price, with free shipping, too. Great little scope!
I already have an L-bracket to use it with on the AT Voyager mount and will try it out with the same on the SLT Mount. It could be a match made in heaven for lightweight grab'n'go setup with the option to have tracking & GoTo or not, depending on the mount used. I am well aware that cooling issues will have to make a more 'pre-planned' grab'n'go but I am okay with that. I will use it on the Moon, planets and double stars mainly.
I also have an AT Voyager. But I think that mount is a little overkill for the C90. My C90 goes directly on a 1/4-20 screw on a 501HDV head and Bogen tripod. Very light, very agile, out the door in one hand, then down the stairs, along the side of the house, and 500' to where I set up on a hill ... all while carrying the C90 on tripod in one hand!