There are very few instructors of any kind that fly beyond their immediate area or fly for a purpose other than training - they tell me this is because they don't earn enough to fly themselves.
Equally however I suspect most students don't want to pay for extended trips.
But as has been said the IMCR is 100% about doing a previously planned flight from A to B, not about doing a load of NDB holds at one's local beacon.
Perhaps the best instructors for IFR are (ex) airline pilots.
Also make sure you get each individual lesson signed by the instructor, in case you want to progress to an FAA PPL/IR for example. It isn't a legal requirement but (given the FAA PPL/IR requires some 40 hours of experience including 15hrs of training from any ICAO instructor, plus other stuff) it will avoid any questions re fake IMC time. The IMC Rating is wonderful but the first time you get stuck at some foreign airport under a 900ft cloudbase, with them not allowing VFR departures below 1200ft, you will want to get an IR
