For clarification, Holsterops IS Safariland. You will no longer be able to order "some" parts that were available on Holsterops, such as plug kits, but that majority of parts should be available direct from Safariland. If you can provide a part number, they should be able to provide that part to you.
What I enjoyed about Holsterops was the option of ordering holsters with a preinstalled QLS fork.