How about Sogo, Causeway Bay or there is another hiking/mountaining shop. Dont know the name or address but if you stand in front of the Excelsoir hotel looking at the harbour, turn left and its along this road about 500m.
The outdoor shop sazzy mentioned has Scapa which no one else inhkg does, quite expensive though starting @ 1200 for a pair. ocean terminal new section LCX has a very nice store for Hitec cost about 4-500 and for kevlar abt 800.
i bought nikko recently from a mountain & outdoor eqpt shop in mong kok for 400. very good grip.