You could do this more easily in DirectRT in terms of controlling the skipping with the keys of your choice. But then you would likely want to embed that within a larger MediaLab experiment in order to administer the questionnaire. If you would be ok with having then press or click a button instead then you could set up the item as a scale response with the video playing as a backvideo and placing a button somewhere that gives the option to "skip" the current video. Would something like that help?
See also: http://www.empirisoft.com/support/showthread.php?t=537