So once ATC release you from the hold, where would they route you? It would be a bit risky to go direct to SADDE, with no climb gradient specified, unless you climbed in the hold.
Huh? You'd have something like 25 miles to climb 2200 feet.
Ordinarily you'd never get to either the hold or SADDE. On the way in I'd expect direct CUDAK, with altitudes as appropriate for the terrain. And if you went missed and wanted to try again (why?) then they'd ask your intentions as soon as you reported missed, and you'd get "climb and maintain 4500, direct CUDAK". (Why 4500? Dunno, but my experience is you usually get multiples of 500 even when the approach would let you go a little lower). (Oxnard has an ILS anyway so unless it was out of service you'd probably never fly the GPS).
I've flown my local GPS (Palo Alto) dozens if not hundreds of times. Even when my route takes me directly past an IAF, I've still been given direct to the intermediate fix (DOCAL). Sometimes even vectored to just outside the FAF (PUDBY).
Many thanks for all the answers.