Basically first dibs at buying that seat for any event at Ibrox. At the time concerts were regularly held and this was to be included in the debenture offer. It is still in use at Murrayfield and the Hampden main stand, mainly corporate take up. Not aware of any similar schemes at football clubs but that may have changed down South. At the time it felt like they were squeezing the pips out of us.
Biggest disappointment for me was the angle of the newly all-seated enclosure that was advertised (I also remember a model of the proposal), turned out to be very different to what we ended up with. It was shown as a virtually a continuation of the main stand gradient, down to pitch side, but we ended up with the existing terracing being seated with large columns at the back.