Not a lot of replies so far
I think this one came up before, here or somewhere, and the consensus was that these cut-down plates are a waste of time.
Anything cut-down is of no use for an
IR because an IR has worldwide privileges, so eventually he will have to learn to read a real plate (which isn't exactly hard).
The marketing aim was probably the IMC Rating, but it isn't that hard to read the real plates (Jepp or Aerad). I know that adult literacy appears to be going downhill but an IMCR pilot should still be able to read and fly any plate placed under his nose; after all, those are his legal privileges.
It's very true that Jepp or Aerad are very expensive, and I suspect that most IMCR holders (and quite a few IR holders) make do with the free plates from Eurocontrol - even though they are not really usable under A4 size.