I do comb honey. I was given some hives when I started out, and a number of them didn't have any foundation in them. Through trail and error I learned that the bees quite consistently build straight comb on frames without foundation, as long as the frames that are immediately adjacent to them do have foundation.
I've simply been cutting it out with a hive knife, putting it directly into a take away container. It attracts a lot of attention at markets, though that attention more often then not doesn't turn into a sale. I've been selling it for more than double the price of liquid honey. I've been using cheap takeaway containers, it doesn't look impressive in all honesty. I've been considering buying these containers instead:
http://mecoplastics.com.au/products.htmlH250 in particular, but it costs over triple the amount of the takeaway containers and I'm not sure if it's worthwhile.
An alternative approach that very well may be better, is to use something like this:
http://www.kelvintrading.com.au/gallery/Beekeeping/comb-honey-box/245096?view=grid&order=date_addedBasically, placing the containers inside the hive for the bees to fill, rather than cutting the comb out of the hive to place inside a container. I've seen a number of varying methods of going about doing this, including people building their own containers out of cheap wood.
Another thing that's quite popular is to simply cut a square of honeycomb and place it in a jar, surrounded by liquid honey. The comb floats to the top, and looks pretty grand; it's very popular.