Being a Hi-Railer, traditional "round-top" tubular O-gauge track makes a very small blip on my radar screen - but it does make one. I would - and did; see photo - use this sort of track in places where it is not "on display" too terribly much if there were 072 (etc) curves available. It is typically durable (not as industrial strength as the tall, tall, too tall "031" track (which I don't use), but definitely not delicate). Good for modular club layouts, especially if painted and ballasted at least decently. It sits nice and low; good in yards.
Anyway, I'd use it. The photo below is on my layout; the Hi-Rail track is Curtis (now defunct) 072; the 0-4-0 sits on Lionel "027" tubular (the curve is an 027/042 - talk about confusing). I have this track all over my layout in yards. GG sells mating pins, though any model RR'er can fiddle his own. Too few ties? If they show, the 027-profile track has 3 small ties that are a lot easier to blend with "slip-under" add-on ties.
BTW - most of the "027-profile" track straights in some of my yards came from my 1950's layout, and about half of those are not Lionel, they're Marx.
Lionel tubular, top; Curtis 072, bottom:
