I've been running trains on this track configuration for about a month now. Everything seems to be fine, so I'm going ahead with scenery. The track is O27 profile with O42 curves in most places and will be detailed to look more realistic. Switches are a pair of smooth, 65-70 year old 1024s.
The setting will be rural, and most of the structures and trees will be made from scratch. Scenery is the main emphasis of the layout, and the trains' main purpose is to be an excuse for me to model terrain and buildings.
The O27 track is much quieter than the FasTrack used on my previous layout. I'm hoping that will still be the case after ballasting is completed.