Having used the QX10, I had exactly that issue tkbslc. It straps around my wrist, great, now add a Galaxy S4 to that and I have a very awkward setup. The module is thick enough that it doesn’t fit in a pocket well at all (like a point and shoot would), so it really needs a purse or something, which I don’t carry.
Then, add all the usability issues or having a Wi-Fi based screen and you have a rather useless toy. Having to wait 12 seconds to compose a photo (can take one right away, but no screen to compose for many seconds) or draining my cell phone battery very rapidly keeping it active. I would rather carry a small A5100 or something any day over this.
As soon as you have to take something out to use with your cell phone like this, you might as well have just had the better separate device.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.