Indeed. The CPL/IR instructors almost never train PPL students. If anyone is getting bumped it would be PPL's - they make a hell of a lot more money doing commercial training.
As for this summer? Forget it I'm afraid. They're booked up until next year, but by all means give them a bell and ask. I enquired about doing the 15hrs IR conversion from FAA, and surfice to say I've had to go elsewhere.