SR71:
With this in mind, the VOR procedure at the same field makes a mockery of this type of justification!
Presumably it is rarely flown in comparison to the LOC?
I suspect the VOR IAP is flown more because it is authorized for GPS overlay.
I don't follow why you believe the VOR IAP makes a mockery of the missed approach LDA guidance (if that is what you mean).
The valley in which the airport lies has more than adequate room for the intermediate and final segments required for a VOR IAP. The missed approach segment is limiting for both the VOR and LOC IAPs, thus the IPKN LDA guidance is equally critical for both missed approach procedures.
Having said that, in the event of a missed approach folks with RNAV typically fly an RNAV course that overlays the IPKN LDA. Technically, that is not legal, but in practice it works fine.