Texas Diabetes & Endocrinology started a clinical trial in June on this subject.
The primary comparator is 1-hour postrandial BGL. There are many other secondary outcome measures.
I found it interesting that Texas Diabetes and Endocrinology is conducting the trail with no commercial sponsors listed, or that I could find. This appears to be primarily a medical practice specializing in diabetes, but they also conduct diabetes-related clinical trial. It’s also a member of Type 1 Diabetes Trialnet - another organization I hadn’t heard of before.