Writing this after having the keyboard (TKL barebones) for around a week. Key thoughts:
* Overall, very happy with the purchase
* Was a near-perfect fit for my needs - I wanted a TKL keyboard that let me use Kailh Silent Box Red switches without needing soldering and without having to buy all the component parts myself such as PCBs, stabilizers etc
* Build seems very solid and the assembled keyboard doesn't look remotely DIY
Areas that were sub-optimal for me:
* I'd have loved dedicated volume and/or mute controls
* Working out which version of the software to download is unclear - ideally there wouldn't be different versions for different serial numbers (especially when my one isn't listed), nor different ones for TKL versus fullsize, there would just be one version which then had the code inside it to recognize the connected device and configure itself accordingly
* A download that allows you to test keys as you install them (or, ideally, integrating that capability into the GMMK software) would be a big help - it's easy to test things like the letters and numbers, but harder to test things like the Pause key that most applications don't use. I found something on the 'net to do it, but it'd be better all in one place
* It'd be nice if the GMMK software let you control the Fn-key actions
