That's because you guys are looking for a physical scene. The "scene" in HK is online or through word of mouth. The apps are built for a place like HK. Try logging on when you're in Wanchai or Sheung Wan next time - its like an online bar scene with someone for everyone.
The unofficial g-hotel in Sheung Wan is the Holiday Inn Express SOHO, just a block away next to Beat/Volume. I've had to turn my phone/iPad off on Friday/Saturday night because of all the messages on the apps from boys looking for shelter after too many drinks.
Right now the best tourist-friendly scene is Friday nights at Linq or Time Cafe. Expect a lot of expats and their admirers hanging al fresco while looking for dates online.