These look pretty interesting, and based on personal experience with their gas grills should be a pretty solid product with excellent customer service.
I for one am interested to see this perform. Although I wouldn't see these as much if any upgrade to the Traeger line.
If I was buying again...
Preface I have not yet tried the spatchcock method but probably will this week. I have done quite a few whole chickens just stood on the grate and they have turned out really great, no issues.
I get that spatchcock will presumably allow to cook more evenly, but being that my results have been...