If anyone out there are interested, I bought the Apeks WTX-D18 in May 2014 and have now done about 150 dives with it.
The materials are great, inflator is great, the wing is of course tiny but has enough lift to be used with my new 7mm semidry, yes I know its crazy to dive with a suit like that here in Bali but Manta Point and Crystal Bay gets damned cold in august/september!
I can release air from the inflator while remaining completely horizontal, something that was not possible with my old OMS wing.
All in all I am very happy with it and would recommend anyone who is not diving "overweight" and who are looking for a streamlined setup to go for it!
Happy bubbles, Morten