I can't properly answer your question, not having a Searsall Mk I. I'm tempted but will resist.
It's basically a one-trick pony and a solution to a problem I don't have. I can cook a great steak on a grill and can sous vide lesser quality meat and then finish on a grill. I have a good enough burner that attaches to a butane canister for creme brulee.
I'm not much taken by the new palladium gizmoish palaver and suspect Dave Arnold might be full of BS.
No for me. But go get one and report.