I have low ceilings in my basement so my overhead pressing has consisted of seated or kneeling, but I’d like to get some standing back in. I was looking into making a cambered bar out of 2"OD pipe and fittings, but this seems like a better option overall, and is only like $40 more expensive.
No personal experience, but I’ll say that pressing a cambered bar isn’t really going to be like pressing a barbell. More like pressing a yoke. You’re going to have to account for some swing factor and stabilization. Still a solid exercise, but not quite the work around you’re envisioning.
I figured it would be a fairly unique movement, exactly for the reasons you described. Certainly not a perfect alternative, but another tool to work with.
P.S. solid recommendation for the galvanized home depot pipe for an axle!