Originally Posted by Carfield

Definitely No... The check in area is heavily guarded and they only allow you in when check in for your flight is opened.
I don't even know if there is storage facilities at CMB! Maybe it is better if you just store your bags in Hong Kong and then check in the bags from HKG upon your arrival from CMB. Of course if your layover in HK is too short, you just have to carry your suitcases with you during your one day R&R at CMB!

Carfield