I have only been to Loch Lomond and Double Eagle, so I guess I can't rate his work effectively. There is a strong lack of quirk is his designs which reflects his own golf game; he builds some great driving holes which let you gamble with the driver, but his greens are mostly FLAT which isn't my cup of tea.
I think Tom may spend about as many days on a site during construction as I do, although he breaks it up much differently, or at least he used to, making 1-2 day visits.
I am not sure who does the routings of his courses. In the old partnership, many of them were done by Jay in conjunction with a particular land planner out of Oklahoma whose name slips my mind right now ... anyway, they were often compromised by trade-offs over real estate issues, not surprising since that was their primary market.
Loch Lomond is very good, although I have always liked Forest Highlands better. I always thought Double Eagle was a bit overrated; the first two stories a visitor would tell were about how fast the tees stimped, and about the Bye hole. If that's the case, maybe the golf holes themselves are not so striking!
Surprised he rates Lahontan above Forest Highlands, but if it really is, it must be pretty good. It's the same developer, so maybe he is putting his effort behind what they are still selling. I may go see the course in Jackson Hole this summer, if I can carve out a day on my way to Rock Creek.