From this list everyone is escrowing only bitcoin.
offer still valid? Is it possible to use the escrow system?
Grin can not be escrowed!
Sure it can, seller sends grin to trusted escrow, trusted escrow sends funds to buyer after Bitcoin is sent to seller and confirmed.
You just have to trust the escrow.
I asked already all the trusted escrows here, no one wants to install the grin cli gui wallet