All my fixed gear bikes are just that... have no desire to ride these bikes as single speeds as if I am going to ride at one speed fixed is the only way to go.

My '55 Raleigh came with a factory double stepped hub and was running a freewheel and fixed cog when I got it... one of the first things I did was remove the freewheel and install a second fixed cog.

Uhm... Customer at the shop ran his track bike as a commuter. Had a freewheel on the (short) fixed cog threads. He rode it all winter. I had to replace the freewheel....

The only way I could get it off was by dismantling the freewheel and putting the left-over freewheel body in a vice (the old trick). Even then it took me at least half an hour to get that sucker off. Fixed threads were all but gone.

I'm not so sure it's wise to run a freewheel on the fixed side. (This was on a single fixed Miche hub)

What makes you so sure freewheel threads would have survived that?

As always, you are right on the money. Might even have been worse on freewheel threads. More surface area to develop corrosion.

This has nothing to do with the freewheel being used on the fixed side. It has everything to do with how much grease (or lack of) was applied to the threads before installation. If the answer was none, then that sort of problem is to be expected.

i've considered flipping my wheel to the freewheel side, but that means i have to get brakes and i just can't handle the amount of street cred i will lose

I figure that hubs aren't made fix/fix because that would be an extra machining step in manufacture and that costs more.