I would mention the Sugoi Evolution short has a fairly low rise-- hits me below the naval... but my derriere is certainely NOT non-existent, so my experience may not count. I love the Ricaro chamois in them. PI sugar knickers/ shorts ar low rise but the chamois is daiper-buttish.

PS I am a thong girl too for panty-line purposes but the thought of a thong on a bike...OUCH