My thoughts.. whatever they are worth?
Having been working to get my Technitop to mount on my Scrambler I'd like to repeat the above statement about the habitat. If you haven't bought your tent yet this is a great option. You get the tent without the weight and wind resistance (not to mention cost) of the rack. I'd have to think that by the time you buy the rack, the tent, and get it all put on then you wouldn't have long to make up the cost difference in lost MPGs.?.
I'm not even done with mine yet and I already can't wait to get back to the states so I can remove it all and mount the tent on my trailer.