Would a belt slide holster work for one of these?
It might, but, personally, I don't like belt slide holsters. I prefer a holster with full coverage down the length of the slide/barrel.
I'll be getting an IWB holster for my 92, haven't decided which one yet. I'm leaning towards a Kramer IWB#3, but a VMII-style holster may be more practical.
I don't carry OWB, but if I did I would probably try to find a good pancake holster. An Avenger-style holster may work, but it doesn't conceal as well, generally speaking.
With a big gun like the 92, whether Beretta or Taurus, the grip is going to be difficult to conceal, so I would recommend finding a holster that will pull the butt of the gun into your body.
I also have a preference for holsters that stay open after drawing the gun. I think it makes holstering easier and safer.
As always, just my opinion. You'll probably have to experiment to figure out what will work for you.