I received a Thiers Issard Le Dandy (Le Dandy) yesterday and had my first attempt at shaving the right cheek this morning (according the recommendation here). I practiced various grips before the shave which felt awkward, but seem more natural when standing in front of the mirror while shaving. I finished the rest of the face with a DE (which I have been using DE's for 18 months).

The areas if face shaved by the straight are noticeably smoother than the rest of the face shaved by the DE - and no cuts. In fact absolutely no irration on areas shaved by the straight. The initial results are much better than I expected. I expect to continue with many baby-steps during the next year, and have the Easter bank holiday to practice.