..... There's no difference for the stand alone player if the media has changed booktype or it is DVD-ROM by default. Booktype is only a type of information, so there's not any danger for the laser pickup head....
Just for curiosity, I'm wondering what is the difference in "Read Strategy" between the real DVD-ROM and BookTypeSet DVD+R ? Normally the real DVD-ROM has comparatively higher reflection ratio for laser beam and readers read DVD-ROM faster than recordable media. That means, in the positive sideview, the DVD+R disc will be read faster after BookTypeSetting than before, while in negative side, the laser pickup head has to draw higher power to read the less-reflective DVD+R media.
Am I right ? Correct me if I guess wrong.