so far they are run the business smoothly without problem you can trust them for now and you may want to visit satoshidice official thread in bitcointalk here to find out more information https://bitcointalk.org/index.php?topic=77870.4080 .
once evoorhees account get red trust , you may will know wether they are trusted or not
Thanks!
Too bad primedice doesn't have an invest option.
make them interested on your offer!i will recommend betking.io for gambling investment service after satoshidice. goodluck!