A one word answer is........... Brilliant!
The longer one is, as said before, technique.
My current project, a staircase, requires some glue up of strings. What I do is lay the boards out as I intend to glue them and clamp them.
I then layout the position of the treads and risers and any tenons etc. Then mark out where to Domino, so that while trenching/ dadoing for the treads/risers I will not either cut through the Domino or reduce the cover it has (if offset). This way each one is at full strength and time and material is saved.
I then cut all the slots on one board at the minimal setting, in this case being sure to line the machine up to the left hand slot as accurately as possible, on the corresponding board the right hand mark is cut at the minimal setting as accurately as possible (bear in mind that to work from the same face the second board has to be swung around to face you left to right)
The rest of the slots are cut at the middle setting so you can be a little lax on lining up with your marks, but the machine needs to be seated fences on timber.
Then glue up and clamp up. The First Domino on the left will line up your marks and the rest will slide into place more easily, clamping from the left. Trying to uniformly clamp more than a couple or three dominos on the smaller setting is a lesson in both patience and anger management......been there, pulled the domino's, scraped off the glue and re-machined them....once!!!
The result is a flat joint line on the face side of the boards, any steps due to a variation in thickness will be on the reverse side and easy to plane or sand flush if required.
This is just one way to use it but it has altered the way I work and problem solve projects no end. My biscuit jointer is looking for a museum to take it in. [jawdrop]
Rob.