Here is my review! I'm going to be very honest in the plusses and minusses.
First, despite measuring my hand against the .pdf size chart at 100%, they are really, really tight. The next size up looked too big on the .pdf chart but I wish I'd gone up one size anyway. It's hard to get the first one on and REALLY difficult to don the second.
The first thing I noticed is that they made my hands really hot. I was diving Cay Sal Banks which is warm water anyway, but I really couldn't wait to get them off. I think that I would really APPRECIATE them in winter or springs diving. For warm water you may wish to consider a vented or perforated back something like what some bicycling or golfing gloves have.
So far as using them, I had to laugh at myself because I instinctively cup my hands when I want to make a quick turn without using fins, and of course these don't work when you cup your hands, you need to spread your fingers! Laughing at myself I "got it" and boy oh boy are they GREAT for a sudden turn you would need while taking pictures of an elusive sea critter.
I normally don't use my hands when finning but I did try them and I think I was laying a wake, I was going so fast!
I showed them to everyone on the Nekton Pilot and they were intrigued. One diver works with an HSA instructor and is going to recommend that he stock up on them (I gave her your web URL). However, nobody wanted to try them...maybe because they are SO small that they really didn't fit anyone.
I won't use my pair again until the water is cooler, but I think I will give them another try, although they really are hard to put on and take off. Thanks again for letting us try these out and again, think about a vented/perforated back on them.