In addition to the pros and cons, the wireless adapter is a very good product in my opinion. It's a step towards a generation 2 VR-HMD. With moving games such as Onward the profit is the greatest, but even with cockpit games it is nice that you no longer have to think about a wire.
On the other hand, you pay the main price for it at HTC. Also, you need to get started in your computer case, so computer building skills are required to do it yourself.
The adapter already runs perfectly on my midrange computer. My adapter relevant parts are:
MB: Asus P9X79 Deluxe (PCIe 3.0 is required!)
CPU: Intel i7 3990k
GPU: Geforce GTX 1070