I have never seen ANY FAA official endorsment of a particular trust. Therefore one should not be seen better than another (naughty Peter - getting towards advertising for free (for a company you prefer) on PPrune)
The FAA at the 6th June Meeting did make public a draft trust agreement that they would feel happy with.
The issue the FAA seem to have with trustor's not being quickly identifiable extends to all US Trusts. Even though SAC trades from a UK address it is still an American Trust and is not above the FAA perception of issues, a quick check on the FAA website will show individual trustors are not quickly identifiable.
FAA Registry - Aircraft - Name Inquiry