Correct since there are certain happenings that escrow scam his clients and watch those past history on scam accusation thread and you will see there that the popular escrow scamming incident is with master-P who used to be a trusted member of this furom before, And for this issue we should make it a basis so that we will be more vigilant upon using an escrow service so that we will not be scam by trusted score hiding scammers.
This is just happening when you chose the wrong escrow. If I have a big project and there's a big amount of bitcoin/money involve I'll be depending to those escrow that has been trusted and will let them sign a contract for a proof of professionalism. But in most cases, escrows that has good reputation now in the community are reliable. Don't just trust those people that doesn't have any background in dealing with others and if possible pay them for their service so that they'll never think something bad about the money.