Yes, that's basically the appeal. An appeal that only applies to geeks and like minded people, but that's basically the appeal. It's not "mainstream". It's not sleek, not trendy, not fancy or stylish, that's not the angle. If you want to make it stylish and trendy, market it under the aspect of ever increasing vendor lock-in and telcos that want to fetter you with endless contracts, and that this is the last bastion of freedom in telcoland. The amount of people who feel more and more under surveillance is increasing, and maybe a suitable market angle would be to sell the Android as the way to display that you don't want to be part of the surveillance crowd.
Before you answer, yes, I know it's simply marketing and has no real meaning. It's what style and fancyness is for the iPhone: A sales pitch.