I do have a set of genuine Corinthian ones that are being used for the front of the station building itself. This is supposed to be an artistic impression of the real 30th St. Station in downtown philly. (I'd google you a photo, but can't easily multitask on my phone yet.) The layout as a whole is sort of Proto-Freelance, in that it has a few specific real locations connected with typical-of-the-PRR mainline stretches. We're all PRR fans, so we're basically working around the limitations of the space and shape of the layout to give us something that approximates the 'feel' of late-1950's PRR in the northeast.
As for permanence and protection: the framing and trackwork is all installed permanently without joints or breaks, so we'd have to cut it into chunks with sawz-alls if we ever need to move out. The catenary (overhead wires) are sectional tho, so they can get broken down and salvaged as standardized parts. We've been installing plexiglass on the public side of the aisle to protect against inappropriate touching and potential damage.