If this is brand-wide, word has never reached any of the Renaissances I've stayed in!

That said, I don't believe I've ever had to wait in a check-in queue at a Renaissance. That Seattle Renaissance was my home away from home for a year or so and other than the occasional airline crew checking in it was usually just me in the lobby...

I'd say it's a nice perk - if the greeter has already taken your preferences into account during room assignment. At the Ren Seattle, I always put text in my reservation saying that I preferred xx01 or xx10 rooms even if they were not on the 26th floor. Sometimes the front desk wouldn't read them and I'd have to ask to be switched out of 26xx to a lower floor 01 or 10 room.

If they didn't read the comments, I'd end up talking to the front desk anyway, making their extra effort to greet me a bit wasted...