Ah, Hand flying the Approach. That did work too, just did it on my Home Airport, EDDG, RWY 25.
The Moo with the Classic Six Pack Cockpit.
NAV1 is set to the ILS/LOC Freq for RWY 25.
RNAV/GPS Approach (RNV25 GPS, OSNAD IAF) is loaded into the Garmin 530.
CDI set to VLOC.
OBS Course on the HSI is set for the RWY (250).
No Autopilot active.
Flying the Approach by Hand.
As soon as the Localizer ID is shown in the Garmin, the Localizer Indicator or Course Deviation Indicator becomes active and shows the Deviation to the Runway.
When you are in Range for the Glideslope, the Glideslope Deviation Indicator becomes active in both Instruments, the HSI and the Attitude Director Indicator. The Vertical Path is shown with the small red Bars on the right Side of both Instruments. Now you can follow the Glideslope manually.
I think you know, when flying a RNAV/GPS Approach with active Autopilot, there is no Glideslope following. Only Heading.