IFS sounds like quite the headache. Oh well. I've only got about 70 hrs and my PPL... Hopefully I won't have to do it. If so, I'll put a grin on my face and realize that i'm getting the hrs for free.
However, even if I were a more experienced airman (1000+ hrs), I don't think i'd want to skip/combine flights in primary. Even if you are relearning basic mindnumbing knowledge, at least you are building time and experience in a new airframe. I would think that combining flights would take your edge away as far as being just one more step ahead of those that don't have the experience. Correct me if i'm wrong.
Interesting and informative thread.