Not part of the BTG team, I made this tool https://github.com/Ayms/bitcoin-transactions
This works for standard and multisig wallets, like Electrum, for BTG now but in fact for any coin based on Bitcoin code, BCH, BTC, zcach, etc (and yes there are dev fees as clearly stated in the description with even a link to people that dislikes it a bit)
Probably not totally trivial to use but still easier than whatever exists, and you don't need to run/sync a node and your wallet, that's the whole purpose of this tool
This is not something coming from nowhere, you can read those threads https://github.com/BTCGPU/BTCGPU/issues/238 and https://bitcointalksearch.org/topic/m.26150335 (and the description of the tool on Github)