The main reason for keeping it here at the moment is that the thread started here, so anyone who had an interest in the topic would expect to see it here.
However, if the thread was started today, I agree that it should have started in the hardware forum. I do think the idea of separating the forums, while simultaneously reducing the overall number of forums, will make sense over time. It seems to me that the pace of hardware-related questions is picking up, so a dedicated forum will be convenient in the future for those are mostly interested in, say, interfaces that work well with SONAR without having to wade through posts on keyswitching with orchestral libraries or the care and feeding of groove clips. We'll see.