Better to train now than not to.
Once you come into a better bar, you'll feel the difference and can adjust.
Back in Colorado, I tried to use whatever bar was the slimmest and spun the best. No idea what it was. It worked.
Same thing when I was at the Crossfit in Central CA. Another no name bar. Still it was better to lift with something.
Having gotten used to lifting with the Pendlay, Eleiko and DHS bars, it's hard to want to go back to the Rogues at my buddy's. Standard rogue bar. We have some generic bars we use for the regular barbell lifts (squat, press, dead) that seem to spin ok. Ok enough to use if need be or show noobs with.