This must be an change with the newer Honda units. My EU2000 is an older model and I have no issue with the GFCI. I may have just a little less power, but I can charge my bike without modifying the generator.
You won't regret your decision by the sounds of it, and as for what'd you miss, well, take a read around here and catch up on all the important bits.
And welcome to the family!
F@&k BRP with a rusty cactus.
They're going to have to really come up with some damn cool toys to change my mind, not sure how I feel about this offering yet.