Summarize my experience with it:
I had a very strict cutting diet and training routine including cardio. I lost a whole lot of fat and retained most all of my muscle (androgen's are my friends) while dropping a total of 25lbs. I used the same diet and supplements as I had the previous year with the exception of adding sesathin. I believe sesathin contributed signifinatly to my fat loss as I was ~10lbs lighter and and equal the size when I was 10lbs heavier.
Since the end of my cut I have been less strict (using the term very loosely) with my diet, omitted cardio, and am training the same, and am still running the last few weeks on MDHT solo. I have regained some water and glycogen weight back for a total of about 7 lbs increase. I am equally lean, vascular, and hard with only .5" back up around my stomach. I have eaten very poorly and I credit sesathin for the ability to maintain my condition.
For me the sesathin may have contributed to my lean condition more than I am aware of but it is hard to isolate one item, as I used quite the arsenal of methods including diet, cardio and supplements.
For me sesathin has very much decreased the negative aspects of falling off the diet wagon or returning to maint/surplus consumption and poor food choices.
Either way you look at it...I feel it has been very helpful.