Yes, Iwanttofly,
I've been doing this for a while, and flown a lot of airplanes over the decades, including a few brand new ones, and the highest time (I was aware of), a Cessna 207 with 19,800 hours on the airframe.
Another test pilot and I sort of trained ourselves on the G1000 in a DA-42 we were delivering to the test facility. It works not too bad of you change seats each leg, so one pilot can concentrate on learning the tech, while the other pilot flies, and vaguely pays attention to the tech. Trying to teach yourself can be daunting. I had to sort of relearn a newer Garmin glass for some Caravan test flying I did, and since have flown VFR quite a few Garmin, and a few other systems. I'm told that my next project has Dynon in it, so another new thing to learn!
I have many observations about that tech, and am indeed in the midst of writing a report to Transport Canada to comment on some deficiencies and incompatibilities I have noticed. Gee I wish there was a app for "correct glass cockpit logic oversights", but that's not going to happen any time soon - we just have to train well to assure the pilot is still ahead of the tech!