Several years back I had the opportunity to play on blades and had a learning curve to overcome.
They have no tail to sit back on or for that matter no front to lean forward on .
They are an ideal ski to check on how balanced you are on groomed slopes and really work well in checking out your carving technique for that reason (for an experienced skier). An unbalanced moves instantly become noticeable as they either spin you out or sit you down....Lesson learned and embarrassed. Several runs and lessons learned quickly help refine your balance.
Once you get past that they are a blast, however, I still prefer my GS or SL skis.
One other note for a new skier they might be a hindrance in learning as they could develop some nasty habits very quickly because of the ease at which they can be skied incorrectly.