Though there is some problem with the preview pane of DTO while scanning via digital images (as mentioned here before) i found that it works perfectly. I can scan and add images as much as i want event it is some kind of blind flight. For scanning full-scale documents it is sufficient.
For this is not mentioned here in the treads before (as far as i´ve seen) i think this is useful to some of them that have this problem.
I use DTO on Lion with a LIDE 35 and the latest version of Scangear.
But would appreciate if the developers find a solution for it is a bit annoying (and if they can fix it: please expand the preview pane a larger better to use size)