Absolutely yes. I have one - paid a lot more for it then that. Cut the floor out of it then you can lift it on and off your dob. I can get it over my 12" dob.
I want one!
Just so I can take part in the Dunny Tent comp. at Qld Astrofest next year.
Oh and I guess it would be handy to put my puter and stuff in too.