Thanks Grog, I appreciate that. I apologise if I have been antagonistic.
As I say, I'm not there, but as I understand it, the major concerns are that IFR acft inbound to Wellcamp will invoke traffic separation that will put OK circuit traffic on the ground for several minutes for each arrival, and that low level NVG training acft will be affected because at the moment NVG act must be cleared not above LSALT. They can't occupy the same airspace as inbound IFR traffic.
If this is going to work without undue disruption to helo training, the rules for traffic separation will have to be changed, or local procedure very carefully designed.