Kevin, we all know that Bellarmine guys get to play wherever, and do whatever they want.....
I've played a fair bit at SJCC over the years. To answer the original question, it's a decent golf course in the Doak 4 range. I'm not aware of Harbottle doing any work there in the mid-90's, the course was always open, and he was busy botching Stanford and LACC at that time. If there is much Tilly there, then Tilly wasn't that good.
Above average quirk the first 7 holes, then a very weak stretch until the 16th tee. #17 I would consider a good, somewhat strategic par 5; #18 offers something in the way of risk reward as well. Nice barranca on those 2 holes. #3 is a tough par 3 when green speeds are up, #6 tee shot I always liked. #1 green sure makes for an interesting approach/tee shot. There are some fairway ripples on #15 which I always found fascinating, along with seeing the occasional deer late in the day. Very well kept poa annua greens, smallish with good tilt.
The clubhouse offers some greasy, mid-20th century architecture, but nice views and is quite simple. The pro shop is in a separate building up the hill, houses a nice little putting green and the first tee feels like it's under the awning. The upper area is a really nice setup.
I've always enjoyed my time there; the people are friendly and the club doesn't try to to be something it ain't.