Only a teeny MP merchant but been using it for any new stuff and - it was not much different from the Merchant Outbox in use. Always had copy in inv anyway so not a big change. As I use the LL viewer to check stuff anyway not a great wrench (no, can not build in it but different issue) as still can't work out the communication thingie. Not a big drag as its on for specific purposes. My only issue is the way stuff ends up being called (sub folders?) but that could be due to my own incompetence.
The hours stated though - thats 6 am to 6 pm (ach 12 hour clock) our side