I did my IR on G1000, and yes it does make it easier, however later I did loads of training on a Seneca steam gauge seam, IR training, and it was not a problem, a few hours to get used to the scan pattern, specially the ADF, as it is nice with the overlay you can make on the G1000, but it does not become a major problem once you have spent a little time with it, also helps to use programs such as Rant, to get used to the steam gauges.
It's not biggie! G1000 or steam gauges, they are just needles doing the same things anyway!