The 224Valkyrie is one more in a long line of cartridges which answers a question few (if any) are asking, IMO. Sure, it will send a 90gr bullet out at decent velocity, but there are precious few 90gr options, fewer still uses for those options, and far better cartridges with which to shoot paper or animals at longer ranges already popularly entrenched in use. It will sell, some, and then it will do like so many others (among them, many 'better mousetraps' for the AR15 platform, even) and fade to obscurity, eventually becoming hard to source.
The reality is, if you want to do it with an AR, and it can't be done in .224cal using a 5.56, there are far better options for doing it more readily available and more easily sourceable.
But, hey, if folks want to play around with it, knock yourselves out. I have a couple of rare/obsolete rounds in my safe, and love them. But as a business decision, I'd think Weatherby would be better suited to chamber their Vanguard in 223Wylde rather than any other variants.