Third year I have done this. No disappointment so far. In fact rather impressed. Very hands off, and superior results. Sorry it is not in time for your St. Patty's Day dinner this year.
Some of us sous-vide users are saving up for a bidet, for unrelated reasons. I think the bidet users should save up for a sous-vide, for unrelated reasons. The corned beef brisket is tender, moist, and foolproof, thusfar.
Also...leftover corned beef and cabbage, with good mustard, makes an OUTSTANDING egg roll. When fried in egg roll skins. Bonus if you make some Russian Dressing and mix it with sauerkraut, rather than cabbage, and add a bit of Swiss cheese for a Rueben Egg Roll.
pat