S Herman wrote:


So a non-IR pilot can file IFR, but cannot then execute that flight
plan, even if VFR conditions exist at all points of the flight?


If that plan involves operating under IFR.

How do IR students practice approaches, etc. when they don't have the
CFII aboard? With a safety pilot?

They either:

1. Let a PIC who is instrument qualified allow them to operate under
IFR.
2. They requiest the practice approach under VFR.