I have been using it for about 2 weeks, I do have to the M2 gimbal is tiny, compare to other gimbals out there.
The M2 itself only weights about 1lb 2oz. This is including battery and everything!!! The compact size is amazing, and its able to support cell phones, action cameras and mirrorless cameras. On the zhiyun's website only shows it supporting Sony A6xxx mirrorless cameras. Didn't mention anything about A7 cameras, I have decided to give it a try. I used an A7III + 28mm 2.8 lens, weights roughly about 1.8lb. To my surprise the Crane M2 is able to handle its weight, and balanced with no problem at all. But I don't think its able to handle any larger lenses. The size is making a big difference for me, I am able to travel with it, and just slip it into my carry on bags and etc. With no problems at all.
There are some things, I am limited with the M2. There is limited clearance space for the A7III camera, so I am not able to make certain movements. For example, I am not able to perform the inception shot. Since the back doesn't have enough space for the A7III camera body. Which is not a huge deal, I just have to work around it. Also the gimbal is mostly made up of plastic parts, which results in the light weight. One thing I really wish they have on the M2 is the axis locks. Now-a-days most of the newer gimbals all have 3 axis locks on them. Which makes balancing the gimbal so much easier, and fast!!! But on unfortunately the Crane M2 doesn't have the axis locks. Hoping Zhiyun will improve that on their next version.