Karma Scissors, zHelms, FM?

Just to make sure about the bolded part:

If you put your karma'd item in your shop, and then the shop expires/closes and it returns to your inventory, does it become untradeable again? Or does the system remember you're the original owner and not turn that flag on again?

Is there a difference, in this regard, between regular shop permits (that work off your own inventory) and hired merchants (that have a separate inventory)?

It remembers you're the original owner. The zhelm stays tradeable until another player buys it from you. If the other player wants to trade it then as well he gotta get Karma Scissors then again.

@bio9205: Only untradeable items who're flagged as scissorable can be used with Karma scissors. And yes putting em in store after you used the scissor is one of the main reasons why people buy karma scissors.