That said, I've flown as "grown up" on a few checkouts with a number of PPLs who really couldn't fly for toffee and no-way was I having them fly our syndicate aircraft solo. I suspect that full-time instructors must get this a lot.
I teach on microlights now. Used to work full time as FI when I lived in UK.
It's astounding how many PPLs think they can just jump in and go. Just because it only weighs 280 kilos they think it isn't a real aeroplane. The diversity of flying skills I find with people with nominally the same qualification is to say the least interesting.
I like the idea of "decide for yourself". Our club has a pretty relaxed ruling, no flying in a club aircraft for three months means an instructor check, unless the instuctor waives it, which is usually for people with other relevant experience.