Standard Catalog of S&W III said the initial 4,560 guns (made 1989-1992) had the Concala Alves finger groove combat grips. Later batches may have had the Hogues, but I remember all the early ones having wood.
I would have preferred the Hogues, as the wood S&W combat grips don't fit my hand and are painful for me to shoot with stout loads.
I have seen the story about the 610 being made for departments that adopted 10mm semiautomatics, but I have only seen it printed on this site. I find it hard to believe. Very few police agencies bought S&W 10mm pistols for issue. A 5 inch 610 weighs 42.5 ounces, a 6-1/2 incher goes 45 ounces empty. Speaking from experience, that is a really heavy gun for police issue. A M-28 Highway Patrolman weighs a bit less and folks complained that they were too heavy. And police departments likely would have wanted 4 inch guns.
I don't doubt that you heard this story, but I would have to see it in print, from a recognizable source, which identifies an example police department, before I would believe it.