I understand Glasgow plan to bring out an SSR monitoring code in the not too distant future for traffic not requiring any form of ATC service and flying close to their airspace.
For those that do require an ATC service and are operating clear of the class D airspace Scottish information will still be providing a "Basic Service" below 3000ft. Talking to Scottish will still provide you with an alerting service and traffic information on any known traffic operating in the same area...the other advantage is that wearing the Scottish Info squawk 7401 that transponder code will be seen by Glasgow and if they feel the need to talk for what ever reason a quick call to Scottish info will have me trafnsfer you over to Glasgow ASAP.
Please feel free to ask any questions with regarding the airspace and I will try to help as far as Scottish Info is concerned.