No Smoke or Smoke in miorrors?
I'm sure some companies will find things that the 2010 emmissions are NOT doing to sell you. But yes, compared to pre-2007 engines, 2010 engines output phenomenally low emission levels.
Check out the following FAMA paper. It may HELP answer your question on whether your dept will need them in the future, or have even needed them in 2007. All depends how long you intend to sit there with a running, non-extracted exhaust system, in a closed garage.