I went through the process last night with my Trezor to claim my Bitcoin Gold and it was very easy.  I had to update the firmware first which only took a few minutes.  Once that was done it was very quick to claim the BTG which I then shot over to Bittrex to keep on the exchange for now till I decide when to sell it.  Seems like a waste but I do not plan on holding BTG any longer than I have to at this point.