Ever been to GVA with your VIPs? And in what aircraft? Intercept from above is the norm.
Well GVA is basically the place where I started flying at the age of 15 and I'm quite familiar with the procedures of this particular airport. Intercepting from above is certainly not the norm.
Anyway I already made a mention on the difference between approaching from above before or after the FAP. If the aircraft was cleared down to 2,000' it shouldn't have been lower after overshooting the GS and I doubt your SOPs would be fine with it.