Well I've been on Wetpixel for years but only found Waterpixels tonight as I was reading up on micro four thirds!
I have a Sony APS-C Nauticam setup and a Panasonic G9 underwater setup as well, though I am not satisfied with either of them for one reason or another! I've also shot the Nikon AW1 underwater. Tempted to try a Nikonos.
I shoot Fujifilm above water, please check out my work here: jakestarrphotography.com